Clevercat Top-Entry Litterbox features a unique top-entry design that nearly eliminates tracking, prevents over-the-edge spills and reduces odor. It keeps litter in, making it excellent for cats who love to dig and kick litter. And it keeps most dogs out, perfect for multi-pet homes. Cats and kittens adapt quickly with no training necessary, and they just love the added privacy. This litter box is not recommended for disabled, elderly or very large cats.