Spray Universal Cleaner on, rub gently in circles, wipe clean. Best for ovens and baked-on grease. Spot test first; avoid glass and chrome finishes. →

<article id="how-to-use-diamond-sponges" class="promo-article"><p><strong>TL;DR:</strong> <a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponges</strong></a> are a powerful abrasive tool, best on ovens and baked-on grease with <a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a>. Dampen the sponge, rub gently in circles, then wipe residue with a clean damp cloth. The coating is abrasive, so always spot test first and keep it off glass, chrome, polished stainless, plastic and delicate finishes.</p><div style="display:flex; align-items:center; gap:12px; margin:1.5rem 0;"><div style="flex:1; height:1px; background:#A3D6B1;"><br></div><span style="font-size:11px; color:#0F6E56; font-weight:500; letter-spacing:0.05em; text-transform:uppercase;">Read on &#x2193;</span><div style="flex:1; height:1px; background:#A3D6B1;"><br></div></div><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/1._Koh_Tools_Still.jpg?width=400" alt="Koh Diamond Sponges 4pk" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/3._Koh_Tools_BA-DiamondSpongeh.jpg?width=400" alt="Koh Diamond Sponge before and after" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div></div><hr><div itemscope itemtype="https://schema.org/FAQPage"><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="how-to-use"><h2 itemprop="name" style="position:absolute; left:-10000px; width:1px; height:1px; overflow:hidden;" id="how-to-use-diamond-sponges">How to use: Diamond Sponges</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Spray Universal Cleaner directly onto the Diamond Sponge to dampen it, then rub gently in a circular motion on the target area. For baked-on grease, spray Universal Cleaner onto the surface first and let it sit for a few minutes before scrubbing. Add more Universal Cleaner as you go, and wipe residue with a clean damp cloth. Repeat as required. Always spot test first and avoid vigorous scrubbing on any finish.</p><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; margin:1rem 0;"><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:10px;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">1</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Dampen the sponge.</strong> Spray <a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a> directly onto your <a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponge</strong></a>. For baked-on grease, spray the surface too and let it sit for a few minutes.</p></div><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:10px;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">2</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Rub gently in circles.</strong> Apply to the target area with light pressure to start. The silica alumina coating does the work, not your arm.</p></div><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:0;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">3</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Wipe and repeat.</strong> Spray more <a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a> onto the surface as you go, wipe residue with a clean damp cloth, and repeat as required.</p></div></div><div style="margin:1.25rem 0;"><p><img src="https://attachments.gorgias.help/uploads.gorgias.io/VvEzB7Nmvd2beky0/diamond-sponge-0f31046b-b2b6-4cf3-80ef-9c14c5fed443.gif" alt="Koh Diamond Sponge demonstration" style="width:300px; max-width:100%; border-radius:12px;" class="fr-fic fr-dib"></p></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="best-for"><h2 itemprop="name" id="what-are-diamond-sponges-best-used-for">What are Diamond Sponges best used for?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Diamond Sponges are designed for ovens and baked-on grease used with Universal Cleaner, and for general hard-surface scrubbing where regular cloths and sponges cannot shift the build-up. They are a targeted scour block for trouble spots, not an everyday cloth. On glazed surfaces like ceramic or porcelain tile and sinks, the abrasive coating can dull or scratch the glaze, so these need a spot test in a hidden area and light pressure, and are not recommended on high-gloss or polished finishes.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">&#x2713; Best for ovens and grease</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Oven racks, oven interiors and cooktops with baked-on grease, used with <a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a>. This is what it does best. See the full list in <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fwhich-surfaces-can-i-use-diamond-sponges-on-7853140" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>which surfaces can I use them on</strong></a>.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Oven racks</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Baked-on grease</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Cooktops</span></div></div><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Glazed tile and porcelain: spot test</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">The abrasive coating can dull or scratch glazed ceramic, porcelain tile and porcelain sinks. Not recommended on high-gloss finishes. If you try it, spot test a hidden area first and use the lightest pressure.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Spot test first</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Risk of dulling</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Not on high-gloss</span></div></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="surfaces-to-avoid"><h2 itemprop="name" id="which-surfaces-should-i-avoid-with-diamond-sponges">Which surfaces should I avoid with Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Do not use Diamond Sponge on glass, polished or delicate surfaces. The silica alumina coating is abrasive and will scratch glass, chrome, stainless steel, acrylic, plastic, painted surfaces, polished timber, high-gloss finishes and unsealed stone. Always spot test in a hidden corner before any new surface, use light pressure, and stop immediately if you see any dulling or scratching. Abrasion damage cannot be undone.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Glass, polished and delicate</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">Glass, chrome, stainless steel, acrylic, plastic, painted surfaces, polished timber, high-gloss finishes and unsealed stone will scratch. The coating is harder than these surfaces.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">No glass</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">No chrome</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">No polished finishes</span></div></div><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Spot test and go gentle</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">Always spot test in a hidden corner before any new surface. Use light pressure and stop immediately if you notice any dulling, scratching or change in finish. Abrasion damage cannot be undone.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Spot test first</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Light pressure</span></div></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="reuse"><h2 itemprop="name" id="can-i-reuse-diamond-sponges">Can I reuse Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Yes. Diamond Sponges are a reusable abrasive tool, not a disposable wipe. Rinse thoroughly under warm water after each use, squeeze gently without twisting or wringing, and air-dry completely before storing. With that care, expect several weeks of regular use per sponge. Replace it when the abrasive coating feels smooth or the high-density PU foam core starts to shred or crumble.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">&#x2713; Reusable, not disposable</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Treat it as a reusable abrasive tool. Rinse thoroughly after each use, squeeze gently without twisting, and air-dry completely. Full detail in <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fhow-long-do-diamond-sponges-last-7853139" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>how long do Diamond Sponges last</strong></a>.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Rinse and dry</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Several weeks</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">&#x2713; What it is made of</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">A high-density PU foam core carrying a bonded silica alumina abrasive coating. That grit is what does the cutting. More in <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fwhat-are-diamond-sponges-made-of-7853138" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>what are Diamond Sponges made of</strong></a>.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">PU foam core</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Silica alumina</span></div></div></div></div></div></div><hr><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:10px; margin:1rem 0;"><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/PDP_content_block_diamond_sponge.jpg?width=400" alt="Koh Diamond Sponges 4pk" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponges</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">4-pack. Built for ovens and baked-on grease. High-density PU foam with a silica alumina coating.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=41577695346733&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/1.Koh_Product_Still_Universal-Cleaner-2L.jpg?width=400" alt="Koh Universal Cleaner 2L" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">The pairing for Diamond Sponges. Spray it on, let it lift, then scrub with light pressure.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=51619725836671&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div></div><p style="text-align:center; margin:1rem 0 0;"><a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Farticles%2Fdiamond-sponge-266863" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">Browse all Diamond Sponge articles</a></p><p style="font-size:11px; color:#0F6E56; text-align:center; margin:1.5rem 0 0;">Last reviewed: August 2026 &#xB7; Koh UK</p><p style="display:none;">how to use diamond sponges, koh diamond sponges uk, koh diamond sponges 4pk, diamond sponge instructions, diamond sponge technique, diamond sponge oven, diamond sponge oven rack, diamond sponge cooktop, diamond sponge baked on grease, diamond sponge grease, diamond sponge silica alumina, diamond sponge pu foam, diamond sponge abrasive, diamond sponge scour block, diamond sponge scratches, diamond sponge spot test, diamond sponge surfaces to avoid, diamond sponge glass, diamond sponge chrome, diamond sponge stainless steel, diamond sponge plastic, diamond sponge acrylic, diamond sponge painted surface, diamond sponge polished timber, diamond sponge high gloss, diamond sponge unsealed stone, diamond sponge ceramic, diamond sponge porcelain, diamond sponge glazed tile, diamond sponge universal cleaner, diamond sponge reusable, how to use diamond sponge koh uk, can i use diamond sponge on glass, will diamond sponge scratch porcelain</p></article>

How to use: Diamond Sponges

High-density PU foam core with a bonded silica alumina coating, made in China. Not kerbside recyclable; reuse for dirtier jobs, then general waste. →

<article id="tool-diamond-sponge-materials" class="promo-article"><p><strong>TL;DR:</strong> <a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponges</strong></a> are made from a high-density PU foam core with a bonded silica alumina abrasive coating, manufactured in China. They are not recyclable in most kerbside bins because the two materials cannot be separated. Reuse for dirtier tasks as they wear, then place in general waste.</p><div style="display:flex; align-items:center; gap:12px; margin:1.5rem 0;"><div style="flex:1; height:1px; background:#A3D6B1;"><br></div><span style="font-size:11px; color:#0F6E56; font-weight:500; letter-spacing:0.05em; text-transform:uppercase;">Read on &#x2193;</span><div style="flex:1; height:1px; background:#A3D6B1;"><br></div></div><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/4._Koh_Tools_Technical-DiamondSponge.jpg?width=400" alt="Koh Diamond Sponge technical detail" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/5._Koh_Tools_Lifestyle_Review-DiamondSponge.jpg?width=400" alt="Koh Diamond Sponge in use" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div></div><hr><div itemscope itemtype="https://schema.org/FAQPage"><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="made-of"><h2 itemprop="name" style="position:absolute; left:-10000px; width:1px; height:1px; overflow:hidden;" id="what-are-diamond-sponges-made-of">What are Diamond Sponges made of?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Diamond Sponge has two parts. The core is a high-density polyurethane (PU) foam block that gives it structure and its springy feel. The outer coating is a silica alumina abrasive film bonded to the foam. That grit is the diamond that does the heavy lifting on hard water marks, soap scum and baked-on build-up. Diamond Sponges are manufactured in China and carry no warranty, as they are a consumable scrubbing tool that wears down with use.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">Core</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">High-density polyurethane (PU) foam block. Firm, springy and holds its shape as you scrub. The foam carries the abrasive coating to the surface.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">PU foam</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">High density</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">Coating</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Silica alumina abrasive film bonded onto the foam. This is the gritty surface that grinds through hard water stains, soap scum and baked-on residue where softer sponges give up.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Silica alumina</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Abrasive film</span></div></div></div><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">Where they are made</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Diamond Sponges are manufactured in China. There is no warranty on Diamond Sponges, as they are a consumable scrubbing tool that wears down with use.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Made in China</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Consumable tool</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">What that grit means in practice</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">The coating is harder than most household finishes, which is exactly why it works and exactly why it needs care. Check <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fwhich-surfaces-can-i-use-diamond-sponges-on-7853140" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>which surfaces you can use them on</strong></a> before a new job, and <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fhow-to-use-diamond-sponges-213038" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>how to use Diamond Sponges</strong></a> for technique.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Spot test first</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Abrasive by design</span></div></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="recycling"><h2 itemprop="name" id="can-i-recycle-diamond-sponges">Can I recycle Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">No. The bonded abrasive film cannot be separated from the PU foam at standard recycling facilities, and mixed-material items get rejected by kerbside streams. Diamond Sponges are not suitable for compost, soft-plastic collection points or TerraCycle programmes either. Check with your local recycling facility for disposal options. The best option is to reuse the sponge for dirtier jobs as it wears down, then place it in general waste.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Not kerbside recyclable</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">The abrasive coating is bonded to the foam core and cannot be separated at standard facilities. Mixed-material items contaminate kerbside recycling and get sent straight to landfill. Check with your local recycling facility for disposal options.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Mixed materials</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Not kerbside</span></div></div><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Not compost or soft plastics</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">PU foam does not biodegrade, so compost and garden waste are out. The silica alumina grit means soft-plastic collection points and TerraCycle programmes cannot take them either.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Not compost</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Not soft plastics</span></div></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="worn-sponges"><h2 itemprop="name" id="what-should-i-do-with-worn-diamond-sponges">What should I do with worn Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Downgrade worn Diamond Sponges to dirtier tasks first. Once it is too smooth for bathroom tile or kitchen surfaces, send it out to scrub BBQ grills, garden pots, tool handles or boot soles. When the abrasive coating is gone or the foam starts breaking apart, wrap the remains and put it in household general waste.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">&#x2713; Reuse for dirtier jobs</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">When the sponge is too smooth for kitchen and bathroom work, move it outdoors. It still scrubs BBQ grills, garden pots, muddy tool handles, outdoor furniture and boot soles.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">BBQ grills</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Garden pots</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Tool handles</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">Final disposal</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">When the coating is fully worn smooth or the foam starts crumbling apart, wrap the remains in a scrap of paper or used packaging and place in household general waste. Knowing <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fhow-long-do-diamond-sponges-last-7853139" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>how long they last</strong></a> helps you time it.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Wrap and bin</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">General waste</span></div></div></div></div></div></div><hr><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:10px; margin:1rem 0;"><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/PDP_content_block_diamond_sponge.jpg?width=400" alt="Koh Diamond Sponges 4pk" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponges</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">4-pack. High-density PU foam with a bonded silica alumina coating. Built for ovens and baked-on grease.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=41577695346733&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/1.Koh_Product_Still_Universal-Cleaner-2L.jpg?width=400" alt="Koh Universal Cleaner 2L" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">Pair with Diamond Sponges for lifting power on stubborn stains, so the sponge does less of the work.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=51619725836671&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div></div><p style="text-align:center; margin:1rem 0 0;"><a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Farticles%2Fdiamond-sponge-266863" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">Browse all Diamond Sponge articles</a></p><p style="font-size:11px; color:#0F6E56; text-align:center; margin:1.5rem 0 0;">Last reviewed: August 2026 &#xB7; Koh UK</p><p style="display:none;">diamond sponge material, diamond sponge made of, diamond sponge composition, diamond sponge what is it made of, diamond sponge pu foam, diamond sponge polyurethane, diamond sponge polyurethane foam, diamond sponge silica alumina, diamond sponge silica alumina film, diamond sponge abrasive, diamond sponge abrasive coating, diamond sponge grit, diamond sponge bonded coating, diamond sponge core, diamond sponge made in china, diamond sponge warranty, diamond sponge recycle, diamond sponge recyclable, diamond sponge not recyclable, diamond sponge kerbside, diamond sponge bin, diamond sponge disposal, diamond sponge dispose, diamond sponge throw out, diamond sponge compost, diamond sponge biodegradable, diamond sponge soft plastic, diamond sponge terracycle, diamond sponge mixed materials, diamond sponge reuse, diamond sponge bbq grills, diamond sponge garden pots, diamond sponge tool handles, diamond sponge landfill, diamond sponge general waste, diamond sponge worn out, diamond sponge end of life, what is koh diamond sponge made of uk, can koh diamond sponges be recycled uk</p></article>

What are Diamond Sponges made of?

Several weeks of regular use per sponge, four to a pack. Replace when the coating feels smooth or the foam starts to shred or crumble. →

<article id="tool-diamond-sponge-lifespan" class="promo-article"><p><strong>TL;DR:</strong> With rinse-and-dry care, expect several weeks of regular use from each <a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponge</strong></a>. There are four in a pack. Replace when the abrasive coating feels smooth or the foam block starts to shred or crumble.</p><div style="display:flex; align-items:center; gap:12px; margin:1.5rem 0;"><div style="flex:1; height:1px; background:#A3D6B1;"><br></div><span style="font-size:11px; color:#0F6E56; font-weight:500; letter-spacing:0.05em; text-transform:uppercase;">Read on &#x2193;</span><div style="flex:1; height:1px; background:#A3D6B1;"><br></div></div><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/1._Koh_Tools_Still.jpg?width=400" alt="Koh Diamond Sponges 4pk" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div><div style="margin:0;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/2._Koh_Tools_Hero_DiamondSponge.jpg?width=400" alt="Koh Diamond Sponge in use" style="width:100%; height:auto; border-radius:12px;" class="fr-fil fr-dib"></a></div></div><hr><div itemscope itemtype="https://schema.org/FAQPage"><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="how-long"><h2 itemprop="name" style="position:absolute; left:-10000px; width:1px; height:1px; overflow:hidden;" id="how-long-do-diamond-sponges-last">How long do Diamond Sponges last?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Several weeks of regular use per sponge, with four sponges in every pack. The silica alumina coating and high-density PU foam core give Diamond Sponge extended scrubbing power. Actual longevity depends on how rough the surface is and how firmly you press. Most people get through several weeks of oven, cooktop and baked-on grease scrubbing before the abrasive coating wears smooth.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">Typical lifespan</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Several weeks of regular household use per sponge, and four sponges in every pack. Longevity varies with how often it comes out and how rough the surface is.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Several weeks</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">4 in a pack</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">What shortens it</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Heavy pressure, very rough surfaces like rusted metal or unsealed brick, and harsh chemicals all accelerate wear. Going light-pressure and letting <a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a> do the lifting stretches lifespan, so it is worth reading <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fhow-to-use-diamond-sponges-213038" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>how to use them</strong></a> and <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fwhich-surfaces-can-i-use-diamond-sponges-on-7853140" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>which surfaces they suit</strong></a>.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Light pressure</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">No harsh chemicals</span></div></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="care"><h2 itemprop="name" id="how-do-i-care-for-diamond-sponges">How do I care for Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Rinse Diamond Sponge thoroughly under warm running water after every session, gently squeeze out the water without twisting or wringing, and air-dry it completely in a cool, ventilated spot. Store it somewhere dry. Avoid harsh chemicals, bleach and high heat, as all three degrade the abrasive coating faster. A sponge left damp in a sealed container will break down sooner than one that dries between uses.</p><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; margin:1rem 0;"><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:10px;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">1</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Rinse thoroughly.</strong> Run the sponge under warm water after every session to flush out residue and debris.</p></div><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:10px;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">2</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Squeeze gently.</strong> Do not twist or wring it. Twisting breaks down the foam core.</p></div><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:10px;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">3</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Air-dry fully.</strong> Cool, ventilated spot. Skip sealed containers and damp corners, and store somewhere dry.</p></div><div style="display:flex; align-items:flex-start; gap:12px; margin-bottom:0;"><span style="display:inline-flex; align-items:center; justify-content:center; width:24px; height:24px; border-radius:50%; background:#017E51; color:#ffffff; font-size:11px; font-weight:500; flex-shrink:0;">4</span><p style="font-size:13px; color:#0F6E56; margin:2px 0 0; line-height:1.6;"><strong style="color:#085041;">Skip harsh chemicals and heat.</strong> Bleach, harsh chemicals and high heat all degrade the abrasive coating faster.</p></div></div></div></div><div itemprop="mainEntity" itemscope itemtype="https://schema.org/Question" id="when-to-replace"><h2 itemprop="name" id="when-should-i-replace-diamond-sponges">When should I replace Diamond Sponges?</h2><div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"><p itemprop="text" style="display:none;">Replace Diamond Sponge when the abrasive coating feels smooth to the touch and no longer grips stubborn marks, or when the PU foam block starts to crumble, shred or lose its shape. A sponge that slides instead of bites has lost its cutting power. Before binning it, downgrade it to outdoor tasks like BBQ grills or garden tools.</p><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:10px; margin:1rem 0;"><div style="background:#FAEEDA; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#633806; margin:0 0 8px;">&#x26A0; Time to replace</p><p style="font-size:13px; color:#854F0B; margin:0 0 10px; line-height:1.6;">The coating feels smooth to the touch and no longer bites into marks, or the foam block starts crumbling, shredding or losing its shape under light pressure.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Coating smooth</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">Foam crumbling</span> <span style="font-size:12px; font-weight:500; color:#633806; background:#FFF36E; border-radius:20px; padding:3px 10px;">No bite</span></div></div><div style="background:#E1F5EE; border-radius:12px; padding:1rem 1.25rem; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 8px;">&#x2713; Before binning</p><p style="font-size:13px; color:#0F6E56; margin:0 0 10px; line-height:1.6;">Downgrade to outdoor jobs before disposal. A sponge that has lost its bite on baked-on grease still works on BBQ grills, garden tools, muddy boots and outdoor furniture. Then see <a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Fwhat-are-diamond-sponges-made-of-7853138" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>what they are made of and how to dispose of them</strong></a>.</p><div style="display:flex; flex-wrap:wrap; gap:6px; margin-top:auto;"><span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">BBQ grill</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Garden tools</span> <span style="font-size:12px; font-weight:500; color:#085041; background:#A3D6B1; border-radius:20px; padding:3px 10px;">Boot scrub</span></div></div></div></div></div></div><hr><div style="display:grid; grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); gap:10px; margin:1rem 0;"><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/PDP_content_block_diamond_sponge.jpg?width=400" alt="Koh Diamond Sponges 4pk" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Diamond Sponges</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">4-pack. Built for ovens and baked-on grease. High-density PU foam with a silica alumina coating.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=41577695346733&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/diamond-sponges" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div><div style="display:flex; flex-direction:column;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer"><img src="https://uk.koh.com/cdn/shop/files/1.Koh_Product_Still_Universal-Cleaner-2L.jpg?width=400" alt="Koh Universal Cleaner 2L" style="width:100%; height:auto; border-radius:12px 12px 0 0;" class="fr-fil fr-dib"></a><div style="background:#E1F5EE; padding:1rem 1.25rem; border-radius:0 0 12px 12px; flex:1; display:flex; flex-direction:column;"><p style="font-size:13px; font-weight:500; color:#085041; margin:0 0 4px;"><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="color:#085041; text-decoration:none;"><strong>Universal Cleaner</strong></a></p><p style="font-size:12px; color:#0F6E56; margin:0 0 10px; line-height:1.5;">Let it do the lifting. Lighter pressure on the sponge means a longer lifespan.</p><div style="display:flex; flex-wrap:wrap; gap:8px; margin-top:auto;"><a href="https://uk.koh.com/cart/add?id=51619725836671&amp;quantity=1" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#ffffff; text-decoration:none; background:#000000; border-radius:20px; padding:6px 14px;">Add to cart</a><a href="https://uk.koh.com/products/universal-cleaner-2l" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">View product</a></div></div></div></div><p style="text-align:center; margin:1rem 0 0;"><a href="https://uk.koh.com/pages/help-centre?hcUrl=%2Fen-US%2Farticles%2Fdiamond-sponge-266863" target="_blank" rel="noopener noreferrer" style="display:inline-block; font-size:12px; font-weight:700; color:#000000; text-decoration:none; background:#ffffff; border:1.5px solid #000000; border-radius:20px; padding:5px 14px;">Browse all Diamond Sponge articles</a></p><p style="font-size:11px; color:#0F6E56; text-align:center; margin:1.5rem 0 0;">Last reviewed: August 2026 &#xB7; Koh UK</p><p style="display:none;">diamond sponge lifespan, diamond sponge how long, diamond sponge how long last, diamond sponge how long do they last, diamond sponge last weeks, diamond sponge several weeks, diamond sponge replace, diamond sponge when to replace, diamond sponge worn out, diamond sponge smooth, diamond sponge no grip, diamond sponge lost bite, diamond sponge shred, diamond sponge shredding, diamond sponge crumbling, diamond sponge falling apart, diamond sponge care, diamond sponge care tips, diamond sponge how to care, diamond sponge rinse, diamond sponge wring, diamond sponge twist, diamond sponge squeeze, diamond sponge air dry, diamond sponge ventilated, diamond sponge sealed container, diamond sponge damp, diamond sponge store, diamond sponge storage, diamond sponge warm water, diamond sponge harsh chemicals, diamond sponge bleach, diamond sponge high heat, diamond sponge pu foam, diamond sponge 4 pack, diamond sponge reuse outdoor, diamond sponge bbq, diamond sponge garden tools, how long do koh diamond sponges last uk, when should i replace koh diamond sponge</p></article>

How long do Diamond Sponges last?

Safe on oven walls, racks, grout, stone, cast iron and stained pots. Spot test glazed tile. Never use on glass, chrome, polished stainless or plastic. →

Which surfaces can I use Diamond Sponges on?

We're always here via email, care.uk@cx.koh.com or fill out the form and we'll be in touch as soon as possible. Our support hours are 9am - 5:00pm AEST (Sydney) Monday to Friday.

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Diamond Sponge

Tools & Accessories

What are the ingredients in Universal Cleaner?

How long does Universal Cleaner last?

Does Universal Cleaner contain palm oil?

Is Universal Cleaner safe for septic and greywater systems?

What surfaces can I use Universal Cleaner on?

How does Universal Cleaner work?

Is Universal Cleaner chemical-free?

Does Universal Cleaner kill bacteria and viruses?

Do I need to spot test Universal Cleaner first?

What surfaces should I avoid using Universal Cleaner on?

Can I use Universal Cleaner on food prep surfaces?

Is Universal Cleaner fragrance-free?

Is Universal Cleaner eco-certified and allergy-friendly?

Is Universal Cleaner safe to use around pets?

Is Universal Cleaner safe for asthma and allergy sufferers?

Can I use Universal Cleaner on stone, marble, or granite?

Can I use Universal Cleaner on TV, monitor, or laptop screens?

Why did you discontinue 4L Universal Cleaner?

Can I use Universal Cleaner in a robot vacuum or mop?

How do I clean carpets, rugs, and upholstery with Koh?

Universal Cleaner

Are Loo Cleaner Tabs safe for septic environments?

How to use Loo Cleaner Tabs

Do Loo Cleaner Tabs have a fragrance?

Should I remove the wrapper on the Loo Cleaner Tab?

What are the ingredients of the Loo Cleaner Tabs?

Loo Cleaner Tabs

What are the ingredients of Bathroom & Shower Cleaner?

How do I use Bathroom & Shower Cleaner?

Are there any surfaces I should avoid cleaning with Bathroom & Shower Cleaner?

Is Bathroom & Shower Cleaner allergy, asthma and sensitive skin friendly?

Is it only for use in the bathroom and shower or can I use it elsewhere?

Is Bathroom & Shower Cleaner anti-microbial or anti-mould?

Does Bathroom & Shower Cleaner have a fragrance?

Can I use it to clean EnduroShield or similar coated shower screens?

Is Bathroom & Shower Cleaner safe to use around pets?

Is Bathroom & Shower Cleaner septic safe?

Universal Cleaner vs. Bathroom & Shower Cleaner: What’s the Difference?

What makes it "eco friendly"?

Can I use Bathroom & Shower Cleaner to clean the bowl of the toilet?

How much Bathroom & Shower foam should I use?

Can I use Bathroom & Shower Cleaner with a Diamond Sponge?

Is Bathroom & Shower Cleaner safe for polished stone?

Bathroom & Shower Cleaner

Bathroom products

Are Dishwashing Tablets septic safe?

What are the ingredients of Dishwashing Tablets?

Can I cut Dishwashing Tablets?

Why didn't my Dishwashing Tablet wrapper dissolve?

Do I need rinse aid with Dishwashing Tablets?

How do I use Dishwashing Tabs for best results?

Can I add essential oils to my dishwasher?

Do Dishwashing Tablets remove tea stains?

Do I need to scrub pots and pans before the dishwasher?

Dishwashing Tablets

Where is Dishwashing Liquid made?

Is Dishwashing Liquid safe for grey water and septic systems?

What are the ingredients of Dishwashing Liquid?

Is Dishwashing Liquid fragrance-free?

How many pumps of Dishwashing Liquid should I use in a full sink?

Can I use Dishwashing Liquid as hand soap?

Does Dishwashing Liquid kill bacteria?

Can I use Dishwashing Liquid in the dishwasher?

Dishwashing Liquid

Is Kitchen Grease & Oil Cleaner the same as Dishwashing Liquid?

Can Kitchen Grease & Oil Cleaner tackle baked-on grease and oven grime?

When should I use Kitchen Grease & Oil Cleaner vs Universal Cleaner?

Is Kitchen Grease & Oil Cleaner safe for food prep surfaces?

What certifications does Kitchen Grease & Oil Cleaner hold?

Is Kitchen Grease & Oil Cleaner harsh on hands?

Can I use Kitchen Grease & Oil Cleaner in a Foaming Spray Bottle?

Is Kitchen Grease & Oil Cleaner safe on stainless steel?

Does Kitchen Grease & Oil Cleaner contain palm oil?

Do I need to rinse after using Kitchen Grease & Oil Cleaner?

Is Kitchen Grease & Oil Cleaner fragrance-free?

Can I use Kitchen Grease & Oil Cleaner on non-stick cookware?

What should I use to wipe off Kitchen Grease & Oil Cleaner?

Is Kitchen Grease & Oil Cleaner a multi-purpose cleaner?

Can I use Kitchen Grease & Oil Cleaner in the microwave or on appliances?

Do I need Kitchen Grease & Oil Cleaner if I already have Universal Cleaner?

How does Kitchen Grease & Oil Cleaner fit into the Koh cleaning system?

What ingredients are in Kitchen Grease & Oil Cleaner?

How do I use Kitchen Grease & Oil Cleaner?

Is Kitchen Grease & Oil Cleaner safe for septic and greywater systems?

Is Kitchen Grease & Oil Cleaner safe on stone benchtops?

Can I use Kitchen Grease & Oil Cleaner in a self-cleaning oven?

Kitchen Grease & Oil Cleaner

Kitchen products

Laundry dosing by wash size (Sheets vs Liquid)

The laundry Stain Removal Guide

How to keep your whites bright with Koh

Can I find Sensitive Laundry Liquid in trial or sample size?

Where is Sensitive Laundry Liquid manufactured?

How many loads are in a 1.5L box of Sensitive Laundry Liquid?

How does Sensitive Laundry Liquid help extend the life of clothes?

How does Sensitive Laundry Liquid help keep clothes whiter and brighter for longer?

Does Sensitive Laundry Liquid contain any fragrance?

Does Sensitive Laundry Liquid deodorise fabrics?

What is Sensitive Laundry Liquid?

What are the ingredients in Sensitive Laundry Liquid?

How can Sensitive Laundry Liquid save me money?

Is Sensitive Laundry Liquid eco certified?

Where should I store Sensitive Laundry Liquid?

Is Sensitive Laundry Liquid septic safe?

Can I use Sensitive Laundry Liquid for hand washing?

Can I use Sensitive Laundry Liquid for sportswear and synthetic fabrics?

Is Sensitive Laundry Liquid safe to use on silk or wool garments?

Can I pre-wash soak with Sensitive Laundry Liquid?

Do I still need to use a bleach whitening detergent with Sensitive Laundry Liquid?

What temperature washes can I use Sensitive Laundry Liquid in?

Does Sensitive Laundry Liquid work in front and top loading washing machines?

Can I use Sensitive Laundry Liquid for both whites and colours?

How much should I use per load of laundry? (Dosage)

Is Sensitive Laundry Liquid compatible with auto-dosing washing machines?

Is Sensitive Laundry Liquid suitable for people with sensitive skin, chemical sensitivities and allergies?

Sensitive Laundry Liquid

How do I use Sensitive Laundry Sheets?

Are Sensitive Laundry Sheets safe for front loaders, top loaders and HE machines?

Do Sensitive Laundry Sheets dissolve in cold water?

What if Sensitive Laundry Sheets don't dissolve or leaves residue?

Can I use Sensitive Laundry Sheets for handwashing delicates?

Are Sensitive Laundry Sheets safe for septic tanks and greywater systems?

How should I store Sensitive Laundry Sheets and how do I dispose of the packaging?