The WhiffAway Retrofit Cartridge is compatible with ALL SLOAN & FALCON waterless urinal models. WhiffAway have created the first-ever “Hygiene Valve”. This unique, one-way valve is part of a patented system that allows liquids to flow down-drain, but prevents gases and liquids from passing back through. It includes an odor barrier that is strong enough to withstand back pressure and will not break over time, and a physical barrier that prevents bacteria from entering the washroom. The WhiffAway Bio Shell uses bio-enzymatic solutions to prevent drains from clogging. It also contains a patented fragrance formulated to neutralize urinal odors. Scent-Ring Technology, this unique dual-purpose design releases custom fragrance formulation and acts as a debris-catcher, preventing unwanted objects from entering the drain. You no longer need to spend money on costly urinal screens that only mask uncleanliness. A Waterless Urinal Cartridge with Trap. NO LIQUID SEALANT REQUIRED! This cartridge is IAPMO/UPC approved for use in the USA. Already Waterless? WhiffAway can help! Customers who have already made the switch to waterless urinal systems are now UPGRADING to the WhiffAway “Hygiene Valve” Cartridge System to eliminate unpleasant odors, prevent clogs, simplify maintenance, and save money. Continuous Care with scheduled Service & Maintenance is available throughout California. Contact us at www.whiffawayusa.com for more information.