The chemicals for the wastewater tank are ready mixed so you don’t have to dilute it yourself. Effective sanitation liquid for your camping toilet’s wastewater tank . 30 ml of additive per 3 litres of wastewater should be used to break down faecal matter. Combats urine and chalk stains and accelerates the decomposition of faecal matter. Keeps your camping toilet hygienically clean. Prevents the build-up of unpleasant odours. Reduces the build-up of gas. Prevents the build-up of algae. Kills germs with disinfectant raw materials. Has a fresh, pleasant scent.