How long should you leave a cat alone in the house? Generally you shouldn’t leave a cat alone for longer than one day because you need to worry about food, fresh water, and litter boxes. To extend the amount of time your cat can stay alone unattended, you could buy special food dispensers, water fountains, and self-cleaning litter boxes. However, it’s generally best to have someone at least check up on your cat after more than a day or two.
Remember, cats are happiest when they can bend human beings to their will, so if they can boss you around, a handy surrogate will make your cat happy whether it’s a friend, a neighbor, or a hired pet sitter who’s used to emotional and psychological abuse from a kitty.