Anti-nibble is a deterrent for animals that chew or destroy objects you want to protect such as: shoes, cushions, carpets, wires, furniture, etc. Can also be used on the animal's excrement to deter it from eating them. Does not stain fabrics or other surfaces and is easy to wash. It is designed from a natural and effective ingredient, grapefruit extract which has a bitter and unpleasant taste but is non-toxic. It is suitable for all breeds of dogs and cats, from 2 months of age.