Cats on your property can be both a nuisance and a health risk. Cats are notorious for chasing and killing birds, tearing up gardens and leaving messes in undesirable areas. Their feces contain a chemical called toxoplasmosis, which is dangerous for pregnant women to be around, as it can cause birth defects. For all these reasons, it is a good idea to keep cats out of your yard. With the use of common and inexpensive materials, you can keep cats out of your yard for good.
Plant Coleus canina or lavender plants in your garden or yard. Coleus canina is perhaps the most effective cat-repellent plant, but it is difficult to find in some areas. If you are unable to find it, just plant lavender.
Sprinkle pepper flakes around your garden, bird feeders or any other places that you notice cats. Not only will the smell deter them, but also the flakes will stick to their feet. When the cats cleans their feet, they will get a taste of the pepper flakes, which will deter them from coming back.
Fill a spray bottle with water and five drops of essential oil. Some good scents to use are rosemary, lavender and citronella. Avoid any type of mint oil, as cats may mistake it for catnip, a member of the mint family, which is a cat attractant. Spray the mixture on the base of trees, around your garden, on fence posts and along your house.
Fill small, plastic containers with ammonia, and place them throughout your yard. Put the ammonia containers along the edge of your property, as well as around trees, shrubs and any other plant cats can hide behind. Ammonia has a scent much like that of stagnant cat urine, so they will likely move away from your yard if they think it is another cat's territory.