Treat your cat to litter and innovative practical litter boxes. A litter box, sometimes called a sandbox, cat box, cat litter tray, cat pan, cat potty or cat litter pan, belongs to the basic furnishings of many cat households. Cat litter boxes are designed to give your feline friends a place to do their business in a way that is more private and protected. Keep your home clean and your cat happy. Shop online for Cat Litter Trays, Litter Accessories & Eco-Friendly Cat Litter at 4aPet.