The PetSafe Simply Clean Self-Cleaning Cat Litter Box is an automatic litter box that stays fresh and clean without scooping. The quiet, slow-moving conveyor system constantly sifts the litter and removes waste, making one full rotation every hour. Waste is carried off to the covered bin keeping it out of sight while reducing odor! All you need is clumping litter and recycled bags for a quick, hygienic cleanup. Cats up to 15 pounds can easily fit in the Simply Clean Litter Box, and it’s also great for multi-cat homes.