Be sure to put away any citrus-scented cleaners as well. Cats strongly dislike any citrus scents. How To Make A Lemon Flea Spray Flea Spray Cat Fleas Homemade Flea Spray Add one cup orange peel and lower. . 2 teaspoons lemon juice. As a general rule dont use anything with a scent in your home if you have a cat. 2 cups of water. These scents can upset your feline friends stomach. Citrus scents can be pretty overwhelming for cats so steer clear of air fresheners candles and other household items that include lemon. Pour two cups water into a medium pot and bring to a boil. Lemon scented dish soap. 1 cup orange peel. This recipe calls for orange peel but any combination of lemon lime orange or tangerine peels will work. Orange Peel Cat Repellent Recipe.