Is Kitchen Grease & Oil Cleaner septic and grey water compatible?Updated 5 days ago
TL;DR: Kitchen Grease & Oil Cleaner is septic compatible and greywater compatible when used as directed. Use only as directed, never pour undiluted product into a septic or greywater system, and avoid excessive use beyond normal cleaning. It works for rural properties, regional homes, off-grid setups, camper vans, caravans and boats. The substantiation is pH 8.5, readily biodegradable ingredients, no chlorine bleach, no phosphates, and low in sodium. If you reuse greywater on the garden, three things decide what is fine: your soil type, whether the plants are edible or ornamental, and your local council rules.
Is it septic and greywater compatible?
✓ The three rules
Use only as directed. Never pour undiluted product into a septic or greywater system. Avoid excessive use beyond normal cleaning applications.
Rinse or wipe with water after cleaning so residue is diluted and carried away. More product does not clean better, it only adds to the load on your system.
✓ Rural, regional and mobile setups
If your home runs on a septic tank, an AWTS, a greywater system or a portable water setup, Kitchen Grease & Oil Cleaner works within it. Follow your system manual alongside your council's guidance.
What makes it septic compatible?
Septic systems run on living bacteria. What upsets them is strong oxidisers, high-pH alkalis and additives that do not break down. Here is where Kitchen Grease & Oil Cleaner sits on each.
✓ pH 8.5
Alkaline, and well below the level that disrupts septic biology.
✓ No chlorine bleach
Chlorine bleach is the classic septic problem. There is none in the formula, and no other strong oxidiser either.
✓ Readily biodegradable ingredients
The surfactants and enzymes break down through normal biological processes rather than persisting in the outflow.
✓ No phosphates, low in sodium
Phosphates feed algal blooms in waterways. Sodium is what accumulates in soil under greywater irrigation. The formula is short on both.
What should I check before putting greywater on the garden?
Greywater on the garden is not one rule for every garden. Three things decide it.
✓ Your soil type
Sandy soil drains and disperses. Heavy clay holds water and salts near the surface, so a clay soil tolerates less greywater before it starts to show.
✓ Edible or ornamental
Ornamental beds, lawns, shrubs and trees are the usual targets. Edible crops are held to a stricter standard, particularly anything eaten raw or grown at ground level.
✓ Your local council rules
These vary by state and by council. They set what greywater may be used for, whether it can be stored, and what sort of system is required. Check before you plumb anything to the garden.
How do I dispose of leftover product?
⚠ Use it up, or dilute well
The best option is to use it up on cleaning jobs, which is what it is for. If disposal is necessary, dilute well with plenty of water as you pour and do not mix it with other chemicals.
Never pour undiluted product down the drain or into a greywater system, and avoid excessive use beyond normal cleaning applications. Follow your local council's guidance for drain disposal and greywater reuse.
pH 8.5, alkaline. 15 ingredients, two enzymes. Lasts an average home around 6 months. GECA (Good Environmental Choice Australia) certified, Sensitive Choice approved, Dermatest tested, Eczema Association of Australasia recognised. Made in Australia.
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Last reviewed: September 2026 · Koh Australia