Top Entry Litter Box with Drawer for Large Cats Bonvovo HE 191 INC. World's Best Good Habits Multi Cat Corn Cat Litter Unscented, Natural Hooks Circle Hooks Asst. Sport Fishing Supply Store South Florida Grand Slam Sportfishing Grand Slam Tackle Guppy Isolation Tank Floating Acrylic Breeder Box Hatchery Square Isolation Tank For Baby Fish, Fry, Betta, Clownfish, Shrimp & Eggs Aquarium Incubator With Suction Cups Size of the litter box matters more than most people think. A litter box that's too small can affect how your cat moves, digs, and even whether they use it at all.