Let the Box Do the Work - No scooping, cleaning or refilling your cat's litter box for weeks Unbeatable Odor Control - Crystal litter removes smell by absorbing urine and dehydrating solid waste. Includes one disposable ScoopFree Crystal litter tray with crystal litter. No More Messy Floors - Low-tracking crystals are 99% dust free and don’t stick to your cat’s paws Leak Protection - Disposable trays have a plastic lining to help protect against leaking and keep your floors clean Easy Cleanup - Simply remove the tray and throw it away; each tray includes a lid for quick disposal