Keep your RV???s flush waste tanks odour-free and running smoothly with Camco???s TST RV Toilet Treatment. The formula is based on natural enzymes and is biodegradable and capable of digesting both solid waste and tissue matter. TST RV Toilet Treatment has a clean scent and prevents odors for up to 7 days. Each 1.89 litre container is sufficient for 16 treatments, and can be used in holding tanks, portable toilets, grey water tanks, and recirculating toilets. Camco TST RV Toilet Treatment is a more natural way to ensure optimum, sanitary performance from your waste tanks, so your RV is always ready for adventure.