Easy. Just two ingredients: potassium hydroxide and purified water.

<table><thead><tr><th style="width: 21.3698%;"><div style="text-align: center;">Ingredient</div></th><th style="width: 78.4869%;"><div style="text-align: center;">What it does</div></th></tr></thead><tbody><tr><td style="width: 21.3698%;"><div style="text-align: left;">Potassium Hydroxide</div></td><td style="width: 78.4869%;">Strong alkali degreaser; saponifies fats&#xA0;&amp;&#xA0;oils into soap for tackling tough grease and baked-on grime at a safe low concentration.</td></tr><tr><td style="width: 21.3698%;">Reverse Osmosis Water</td><td style="width: 78.4869%;">Ultra-pure solvent; dilutes the alkali, prevents mineral residue and streaks, and ensures a clean, streak-free finish.</td></tr></tbody></table> Formulated at ~12.5 pH, our Universal Cleaner is powerful enough to saponify grease yet gentle on your surfaces.&#xA0;For full safety details, <a href="https://cdn.shopify.com/s/files/1/1074/1454/files/Koh_Universal_Cleaner_BIB_SDS.pdf" target="_blank" rel="noopener noreferrer">download the Safety Data Sheet (PDF)</a>.

What are the ingredients of Universal Cleaner?

One 4L Universal Cleaner replaces up to 3 throw-away plastic bottles. Better for your home, better for the planet.

We sell Universal Cleaner in 2L quantities to help save you money. A little goes a long way, and our Universal Cleaner typically lasts 3 months for a standard 2-3 bedroom home when used in conjunction with the Koh cleaning system. It is also a more eco-friendly solution, with the <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> and <a href="https://uk.koh.com/products/atomiser-spray-bottle" rel="noopener noreferrer" target="_blank">Atomiser Spray Bottle</a> replacing the need for 10 throw-away plastic trigger sprays.

Why do you sell the Universal Cleaner in bulk?

No palm oil here. Universal Cleaner is 100% palm oil free, making it a safer and more sustainable choice for your home and the planet. 🌏

No, our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> doesn&#x2019;t contain palm oil.

Does Universal Cleaner contain palm oil?

Yes, Universal Cleaner is safe to use around standard septic systems.

Yes, <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is safe to use around standard septic systems.

Is Universal Cleaner septic safe?

Almost anything: from benchtops to bathroom tiles. Avoid soft metals and surfaces that don’t play nice with alkaline. Always spot test.

<a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is a no-rinse surface cleaner that can be used on almost any surface around the home including bench tops, ovens, stovetops, windows, tiles, bathrooms, floors, and mirrors. It can also be used for light stain removal on carpets, rugs, upholstery and leather.&#xA0; We recommend spot testing surfaces prior to use. Universal Cleaner is an alkaline based cleaning solution and should not be used to clean soft metals such as zinc, copper, brass, raw aluminium, aftermarket window tints and surfaces incompatible with alkaline based cleaning products.&#xA0;

What can I use Universal Cleaner for?

Universal Cleaner lifts and traps grease, dirt, and grime using just two ingredients, so you can wipe it away with ease.

<a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is a two-ingredient formulation made from potassium hydroxide and distilled water. Once sprayed onto surfaces, it binds to dirt, grease, and grime, then lifts and suspends it so you can easily wipe it away.

How does Universal Cleaner work?

All cleaners use chemicals, we just leave out the nasty ones. No dyes, no toxins, just two clean ingredients.

Water and potassium hydroxide are both chemicals, so while Koh isn&apos;t technically chemical free, the <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is free of harsh chemicals found in regular cleaning products.

Is Universal Cleaner chemical free?

Universal Cleaner is not a sanitiser or disinfectant, it’s designed to clean, not kill germs.

Under scientific lab testing, our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> has been proven effective against common bacteria (salmonella, campylobacter and E.coli). However, Universal Cleaner is not a sanitiser or disinfectant which means it will not kill viruses.

Does the Universal Cleaner kill bacteria and germs?

Yep, we always recommend a quick spot test in an inconspicuous area before you get Koh’ing. Just to be safe, not sorry.

Yes. We always recommend a small spot test in an inconspicuous place before you get Koh&apos;ing!

Do I need to do a spot test with Universal Cleaner?

Universal Cleaner isn’t suited to soft metals or certain coatings. When in doubt, spot test it out.

Basically we recommend to avoid raw soft metals such as aluminium, copper, brass etc. Also window film style tints can have compatibility issues.&#xA0;Beyond that it&apos;s hard to provide a comprehensive guide due to the near limitless number of chemicals used in manufacturing homewares and building products and so as with any cleaning product we recommend if you have any concerns to always spot test prior to application.

What can't you use Universal Cleaner on?

Used as your daily MVP with the Spray Mop, a single 2L refill keeps most homes sparkling for up to 2 months.

Our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> lasts for 3 months for a standard 2-3 bedroom home when used as an everyday cleaner in conjunction with the Koh cleaning system and <a href="https://uk.koh.com/products/spray-mop" rel="noopener noreferrer" target="_blank">Spray Mop</a>

How long does Universal Cleaner last?

With a pH of 12.5, Universal Cleaner isn’t suited for raw metals or aftermarket glass coatings.

Universal Cleaner packs a punch with a pH of 12.5, making it highly effective at cutting through grease and grime. But with great cleaning power comes a few surfaces you&#x2019;ll want to steer clear of to avoid potential damage.&#x1F6AB; Avoid using Universal Cleaner on:<ul><li>Soft metals like brass, zinc, copper, and raw aluminium, as they can react with alkaline solutions.</li><li>Aftermarket glass coatings and films, such as EnduroShield,&#xA0;always follow manufacturer guidelines for cleaning.</li></ul>If you&#x2019;re ever unsure, we always recommend a quick spot test on an inconspicuous area before diving in! &#x1F4A6;&#x2728;

What surfaces should I not use Universal Cleaner on?

Got a refill sitting pretty? With an 18-month shelf life, Universal Cleaner’s built to last, not to landfill.

The formulation of the <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is effective for 18 months.

Is there a use by date for Universal Cleaner?

Yes! Universal Cleaner is safe on food prep surfaces. Just rinse well and let it dry before using again.

Yes! Universal Cleaner is safe to use on food prep surfaces, including wooden chopping boards. Just make sure to rinse thoroughly with water &#x1F4A6; and let it air dry before using it again for food prep.A cleaner clean, without the nasties! &#x1F9FC;&#x1F52A; Note: We always recommend spot testing before use. Universal Cleaner is alkaline-based and should not be used on soft metals like zinc, copper, brass, raw aluminium, aftermarket window tints, or any surfaces that are incompatible with alkaline cleaners.

Is Universal Cleaner safe to use on chopping boards?

Scent-free by default, customisable if you like. Add a few drops of essential oil and shake.

<img src="https://attachments.gorgias.help/uploads.gorgias.io/VvEzB7Nmvd2beky0/universal-cleaner-4l-327b9308-07d5-45b4-86d7-7ad0f1be475c.gif" style="width: 300px;" class="fr-fic fr-dib"> Our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is 100% fragrance and scent free. If you prefer a fragrance, you can add a few drops (2-3) of essential oils.

Is Universal Cleaner fragrance-free?

Eco-certified by GECA and asthma-aware thanks to Sensitive Choice approval. Allergy UK Approved.

Independently certified Allergy UK. Not tested on animals.&#xA0;Safe and suitable for use in food handling facilities that operate in accordance with a HACCP based food safety programme.

What Certifications does the Universal Cleaner have?

Safe ingredients, but still best used with care. Keep pets away while you spray and until surfaces are dry.

Our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> doesn&apos;t contain fragrance or harsh chemicals, however we recommend using with caution around your pets.

Is Universal Cleaner pet-friendly?

Allergy approved, skin-friendly, and asthma-safe - our Universal Cleaner doesn't just come in a box, it ticks them too ✅🫶

Our <a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> has been awarded the Allergy UK Seal of Approval. It is allergy friendly, safe for use with sensitive skin, and has undergone patch-testing at a Dermatology Lab.

Is Universal Cleaner asthma friendly?

Seal the deal with Universal Cleaner - Allergy UK approved and tested for sensitive skin 🧴✨

Is Universal Cleaner allergy friendly?

🪨 Universal works on most stone. Spot-test first and wipe marble dry.

<article id="faq-universal-on-stone" class="faq-article">Many customers report excellent results using Universal Cleaner on a variety of stone, including marble and granite, provided a little care is taken.<h2 id="how-to-clean-stone-safely">How to clean stone safely</h2><ol><li>Spot-test first: Spray a tiny amount in an inconspicuous spot, wait a few minutes, wipe and check for any change in colour or sheen.</li><li>Spray &amp; wipe: Clean the main area using light, even pressure.</li><li>Dry the surface: Liquids left to pool can stain or dull some stones, buff dry with Ultra Pro Cloth.</li></ol><h2 id="why-spot-testing-matters">Why spot-testing matters</h2>Sealants, resins and stone finishes vary by manufacturer. A quick test ensures Universal Cleaner won&#x2019;t react with your particular surface treatment.<h2 id="need-extra-reassurance">Need extra reassurance?</h2>If you&#x2019;re still unsure, check your surface supplier&#x2019;s care guide.</article>

Can I use Universal Cleaner on polished marble?

Keep screens streak-free without risking the coating. Use a dry Glass Cloth and skip Universal Cleaner on the display itself. 📺

<article id="cleaning-screens" class="promo-article">TL;DR: Don&#x2019;t use <a href="https://uk.koh.com/products/universal-cleaner-2l">Universal Cleaner</a> on any TV, monitor or laptop screen. For the display, use a dry&#xA0;<a href="https://uk.koh.com/products/universal-cloths-glass-3pk">Glass Cloth</a> (microfiber) only. You can clean the bezel/stand with Universal Cleaner, spray onto the cloth, not the device, and avoid ports.<hr><h2 id="why-not-universal-cleaner-on-screens">Why not Universal Cleaner on screens?</h2>Modern displays have delicate anti-glare and oleophobic coatings. Universal Cleaner is an alkaline detergent designed for hard, non-coated household surfaces, great there, but might be too strong for screen coatings.<h2 id="safe-simple-routine">Safe, simple routine</h2><ol><li>Dry wipe first. Use a clean, dry Glass Cloth in straight lines (top-to-bottom). This lifts dust without scratching.</li><li>For smudges (if your manufacturer allows): Lightly mist distilled water onto the cloth (never directly on the screen). Wipe gently, then immediately buff dry with a second dry cloth.</li></ol><h2 id="cleaning-the-bezel-stand--case">Cleaning the bezel, stand &amp; case</h2><ul><li>These parts are usually safe to clean with Universal Cleaner, but still spot test.</li><li>Spray the cloth, not the device. Wring to damp, then wipe. Keep moisture away from seams, vents and ports.</li><li>Finish with a dry cloth.</li></ul></article>

How to clean TV, monitor & laptop screen

Short answer: we don’t recommend adding Universal Cleaner to robot vacs/mops. We haven’t tested it, and device makers usually specify water only. 🌊

<article id="robot-vac-compatibility" class="promo-article">TL;DR: We haven&#x2019;t tested Universal Cleaner with robot vacuums or robot mops and don&#x2019;t recommend adding it to tanks, lines, or internal parts. Most device makers specify water only. We can&#x2019;t guarantee compatibility, performance, or warranty coverage.<hr><h2 id="why-we-dont-advise-it">Why we don&#x2019;t advise it</h2><ul><li>The robot models have different pumps, seals, and sensors, so we can&#x2019;t confirm safe use across them. &#xA0;This hasn&#x2019;t been tested.</li><li>Manufacturer rules generally state that most robot vacuum and mop manuals specify water only in the tanks. Using solutions can void warranties or affect sensors.</li><li>We don&#x2019;t provide dilution guidance for Universal Cleaner. Please don&#x2019;t add Universal Cleaner to any internal reservoir.</li></ul><h2 id="if-you-choose-to-experiment">If you choose to experiment</h2>Follow your device&#x2019;s manual. Test on a small area of flooring first and monitor for residue, streaking, or error messages.</article>

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

One cleaner to rule them all? Still true. But now you’ve got a few sidekicks for trickier messes.

Nope, and we still stand by it, 100%.Universal Cleaner was the product that started it all, and it&#x2019;s still the one we reach for day in, day out. It&#x2019;s versatile, effective, and a firm Koh favourite for a reason, truly your everyday MVP.We built our name on the idea that one cleaner could do (almost) everything and Universal Cleaner still can. But as our Koh-mmunity grew, so did the requests for specific solutions that go even further for particular needs. Think: enzyme-packed formulas for baked-on grease, or a thicker, ultra-concentrated laundry liquid for sensitive skin, that delivers performance and is a friend to the planet.We&#x2019;re not replacing Universal Cleaner. We&#x2019;re building on it. These new products are for people who want something with more punch in specific areas. Not more effort, just more options. It&#x2019;s still about an easy personal choice and always will be &#x1F49A;

Is Universal Cleaner being replaced?

Yep. Universal Cleaner contains no animal-derived ingredients and is vegan-friendly.

<a href="https://uk.koh.com/products/universal-cleaner" rel="noopener noreferrer" target="_blank">Universal Cleaner</a> is suitable for vegans, as it does not contain any animal derivatives.

Is Universal Cleaner vegan?

Farewell 4L 👋 You wanted more space, so we trimmed the bulk - but kept the clean.

Our customers love buying Universal Cleaner in bulk, but wish it would take up a little less space in your cupboard. This is why we phased out 4L and launched our new bulk size 2L - which lasts for months of cleaning but gives you more storage space for other stuff.

Why did you discontinue 4L Universal Cleaner?

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.