This modern top entry petmate cat litter box allows your cat to comfortably access the litter from above through a large opening in the lid of the box the most innovative feature of this litter box is its arched and perforated lid which the cat walks across when entering or leaving the litter box the special surface of the lid with its anti slip texture ensures that any litter still clinging to the cats paws when it exits the box stays on the lid the small holes in the lid help the litter