Includes Disposable Tray with Crystal Litter – 2nd Generation Strike scooping the litter box off your to-do list. With the ScoopFree Self-Cleaning Litter Box, there’s no scooping, cleaning or refilling your cat’s litter box for weeks. It uses crystal litter which provides 5 times better odor control than traditional clumping litter. Crystal litter absorbs urine and dehydrates solid waste. This low-tracking litter also helps keep your floors clean because it is 99% dust free and doesn’t stick to your cat’s paws. Safety sensors ensure that the scooping cycle only occurs when your cat is out of the box. It uses disposable trays that have a plastic lining to help protect against leaking, and each tray comes with a lid for quick and easy disposal. Just remove the tray and throw it away. There’s even a health counter that tracks how many times your furry feline uses the box, which is a convenient way to detect early signs of a health issue. PetSafe brand is here to help you and your pet live happy together.