We have two gorgeous prized Persian cats. Normal litter boxes are awful. The litter gets kicked around, there is not enough room and it stinks up the house. We purchased a Rabbit Air Filter, we use Blue Buffalo multi cat clumping walnut litter and no one knows we have cats. This litter box is so fancy, people have no idea it's a litter box. They discretely enter on the side, and exit peacefully. Inside, we have a large litterbox with double liners because they sometimes kick through the liner