Thetford twin pack contains: 1 x 1.5L of Aqua kem. Effective toilet additive, eliminates unpleasant smells, reduces gas build up, stimulates the break down of waste matter and toilet paper. Dosage: 120ml per 20 Litres tank capacity. 1 x 1.5L of Aqua rinse Lavender scented fresh water tank fluid, ensures a more effective and smoother flush.
Leaves a protective layer in the toilet bowl. Prevents scale and keeps water fresh. Dosage: 100ml per 15 Litres tank capacity.