The easiest and most effective way to keep your waterfree urinal cleaner and significantly reduce costly maintenance problems. Our patented Cartridge System, allows the natural flow of urine through the trap, and renews the liquid seal with each use. Every time the urinal is used the liquid seal is renewed, getting rid of old urine in the system. • Eliminate bad odors • Eliminate costly oem cartridges • No costly gels • Save money