Is Kitchen Grease & Oil Cleaner safe for septic and greywater systems?Updated 9 days ago

Yes. Kitchen Grease & Oil Cleaner is septic and greywater compatible when used as directed. Use the recommended amount, rinse thoroughly with water after cleaning, and avoid pouring large amounts undiluted down the drain. Suitable for rural properties, off-grid setups, camper vans, caravans, motorhomes, boats, and narrowboats. The formula is mildly alkaline at pH 8.5, made from readily biodegradable ingredients, contains no chlorine bleach, and no phosphates, all of which help maintain healthy septic system biology. Always follow your local council's guidance for greywater reuse and disposal, particularly if you reuse greywater for garden irrigation.

Septic systems rely on living bacteria to break down waste. Strong oxidisers (chlorine bleach), high-pH alkalis, antibacterial agents, and certain non-biodegradable additives can disrupt or kill that bacterial activity, slowing the system down or causing failure. Kitchen Grease & Oil Cleaner is mildly alkaline at pH 8.5 (well below the threshold that disrupts septic biology), made from readily biodegradable ingredients, contains no chlorine bleach, and no phosphates. The enzymes in the formula (lipase and protease) are biological catalysts that break down at the same rate as the food residues they target, leaving no persistent residue in the outflow. Used as directed and rinsed thoroughly, it doesn't disrupt septic system function.

Best option is to use it up on cleaning jobs, that's what it's designed for. If disposal of leftover product is necessary, dilute well with plenty of water as you pour and don't mix with other chemicals. Don't pour large amounts of undiluted product down the drain or into a greywater system in one go. Always follow your local council's guidance for drain disposal and greywater reuse, particularly if you reuse greywater for garden irrigation.