HOW SLOAN WATERFREE TECHNOLOGY WORKS
The cartridge acts as a funnel directing flow through the liquid sealant (1), preventing any odors from escaping.  Next, the cartridge collects sediment (2), allowing the remaining waste to pass freely down the drain (3).

Heavy-Duty Cartridge
The heavy-duty cartridge is the main component and is installed at the base of the urinal. A biodegradable sealant liquid is contained within the cartridge. A barrier is formed between the drain and the open air by the liquid sealant, eliminating odors. The cartridge is designed to collect uric sediment. The remaining liquid, which is non-corrosive and free of hard water, is allowed to flow into the drainage pipe.  The result: no wasted water and an odor-free environment.  Maintenance is performed by replacing the cartridge after 7000 uses with a provided key.