One of the main reasons people domesticated cats was that they are so effective at hunting mice and other rodents. Cats today still have these strong hunting instincts, but not every cat can be bothered to go hunting when they know their owner will provide them with all the food they need without them making any effort at all. However, even if your cat isn’t an expert hunter themselves, they can still help you rid your home of mice using their kitty litter.
Kitty litter is usually designed to reduce the odours given off by cat waste, but when you’re repelling mice, you want the exact opposite. Unscented cat litter, or cheaper brands that are less effective at covering up smells, will be more useful for mouse deterrent purposes.
Before you get to work, slip on a pair of gloves as cat urine can contain some nasty viruses and bacteria. Then, grab something to scoop the kitty litter up with (a garden spade works well) and scoop up a decent amount of used litter. You need to use litter the cat has urinated on for it to be effective. Place the used litter in an uncovered container before placing the containers in any areas you think mice are using to enter your home. If there are multiple entry points for the mice to use, you can place containers at each one.
When the mice smell the cat urine, they will know there’s a predator nearby. This doesn’t absolutely guarantee they won’t come onto your property, but it will be enough to deter most would-be home invaders. You can also use these containers to drive away mice that are already in your home, although they might not work near mouse nests, which generate quite a stink of their own.