The Premier Pet AutoScoop Crystal Litter Box System is a selfcleaning litter box that makes caring for your cat easy and convenient. It automatically scoops itself after every use, giving your cat clean litter all day. The premium crystal litter is 99% dust free and controls odor 5x better than traditional clay litter. Simply place one of the disposable trays preportioned with premium crystal litter under the litter box and forget about it. Once your waste trap is full, simply remove the litter tray, cover with the included lid and toss it!