Aristopet No Scratch Spray is a behaviour modification spray for cats. If your furniture, doors or walls are getting destroyed by cat claws, this easy to use spray can help. Aristopet No Scratch Spray is a behaviour modification spray for cats. If your furniture, doors or walls are getting destroyed by cat claws, this easy to use spray can help. Simply apply to the area that you want your cat to avoid and the ingredients will deter your cat. The smell is barely detectable by human noses but kitties find it horrible. The blend of essential oils is offensive to your cat but completely safe and non-toxic. Low toxicity, herbal formula. Spray allows you to evenly disperse the liquid where desired. Use in one area and leave another untreated next to a cat scratcher.