Cats are instinctively neat, always grooming themselves to look their best. But their litterbox habits can get quite messy. Keep litter contained with the Clevercat Top Entry Litter Box! Award-winning design has a 9 diameter entry in the top and is great for kitties who like a little privacy. The box keeps litter inside from overzealous diggers and kickers, and the grooves in the specially designed lid help keep tracking and spills to a minimum. The lid also helps reduce room odors. And for those households with nosy pooches, Clevercat is doggy-proof for most canines. Can be used with or without liners and is suitable for most felines (not recommended for disabled, elderly or very large cats). Litter box measures 20-inch x 15-inch x 15-inch with a 9-inch diameter entry.