Omega Paw Roll N Clean Self-Cleaning Litter Box is an innovative hooded litter box that takes care of the mess for you. With this self-cleaning litter box, you can say goodbye to scooping pet waste. Omega Paw has designed this litter box with a lid and a unique patented sifting grill. This grill is located inside the litter box and operates by sifting out the clumped waste and depositing it into the removable pull-out tray. The Premium Roll 'N Clean Self-Cleaning Litter Box also features upgraded locking clips that are chrome plated for durability and strength.Though the design of this pet litter box is advanced, the box is quite easy to use. Just roll the litter box all the way over onto its top, roll it back to the original upright position, remove the tray, and dispose of any waste. As an additional benefit, the Roll 'N Clean litter box helps keep your cat's space tidy, saving you extra cleaning time.