To make sure you can rely on your chemical toilet as long as possible, it is important to use special toilet additives for both the upper and the lower tank (waste tank and flush-water tank). B-Fresh Blue is a waste tank additive which also gets rid of unpleasant smells from your system as well as breaking down toilet waste. Adding this to your waste tank helps keep everything clean, fresh and smelling nice.
Directions for use: Add 75ml of B-Fresh Blue to every 10 litres of toilet waste tank capacity. Then add 2 to 3 liters of fresh water. Empty at least every 3 days.
B-Fresh Blue does not contain formaldehyde so it's safe to use. It also does not harm seals or moving parts, as it is specially developed for use in chemical toilets, like the Porta Potti.