Premium Blue Crystal Litter reduces odor 5 times better than clay and clumping litter Disposable tray for hands-off convenience Covered waste trap locks in odor and leaves litter box smelling clean and fresh Uses 5-10x less litter than clay or clumping litter Low-tracking crystals don’t stick to your cat’s feet 99% dust free The tray’s lining creates a powerful extra barrier to help protect against leakage Absorbs urine on contact and dries solid waste to reduce odor Each tray weighs only 6.5 pounds (including 4.5 pounds of litter) Conveniently stack & store trays