The cleaning of Centaurus urinals should depend on the frequency of use. For hygienic care, only mild, alkaline or slightly acidic cleaners should be used. In order to prevent the action of such cleaners on the membrane, the urinal should be rinsed with clear water. The cleaning with the aid of solvents, paradichlorobenzene (pdcb) fragrance tablets, phosphoric or hydrochloric acids should be strictly avoided. Damage to the membrane is also caused by the use of detergents with pH values <1, adhesive gel or waxes and the incidence of direct sunlight.