The Premier Pet Auto-Clean™ Litter Box System is a self-cleaning litter system with superior odor control. The whisper-quiet system has a slow-moving conveyor that sifts litter and removes solid waste every 30 minutes. No more scooping! Designed to work with any clumping clay litter, simply fill box with litter, line the waste bin with any bag, and plug in. Waste is locked away in a removeable waste trap for quick and easy cleanup. An activated carbon filter (GAC00-16773) absorbs the odors of the contained waste to provide a 2nd layer of odor defense. Keep your cat happy and your home smelling fresh with the Premier Pet Auto-Clean Litter Box System!