Fill a spray bottle with 8 ounces of warm water. Add 10 drops of lemon- or orange-scented essential oil to the water. Cats dislike the smell of citrus and will most likely stay away from citrus-smelling objects. If citrus doesn't work on your finicky feline, try cinnamon, lavender or eucalyptus oil.
Oils like citronella, lavender, peppermint, lemongrass and orange tend to repel cats when they smell them and are nontoxic. To make a homemade solution of these oils, mix one part essential oil with three parts water, recommends VetInfo.
Five Methods:Mixing Up Essential Oil Cat RepellentPreparing Vinegar Cat RepellentWhipping Up Citrus. . You can apply it to floors, walls, and even furniture.