Thetford Duo Tank Cleaner Concentrated is a powerful periodic cleaner designed for both toilet waste-holding tanks and grey water tanks in caravans and motorhomes.

Its concentrated formula helps remove limescale, encrusting and grease deposits, including build-up around internal technical components. No scrubbing is required, helping maintain the tank and prolong its service life. Thetford recommends periodic use, typically 2–3 times per year.

Key features:

Genuine Thetford tank maintenance product
Suitable for waste-holding and grey water tanks
Removes limescale, grease and stubborn deposits
Cleans internal tank components
No scrubbing required
Helps prolong tank life
Pleasant citrus fragrance
Concentrated formula
Suitable for caravans, motorhomes and campervans
Bottle size: 800ml / 0.8 litre
For a toilet waste tank, Thetford specifies 200ml per treatment, giving up to 4 treatments from an 800ml bottle. Alternatively, one bottle provides a 200ml toilet waste-tank treatment plus a 600ml grey-water-tank treatment