Good Dog Bitter Works can be sprayed directly on your pet to help eliminate fur biting and skin scratching due to irritations such as hot spots, insect bites and wounds. It can also be used on household items like shoes, clothing and furniture to deter chewing. Can be used with dogs, cats, birds, and ferrets. Ingredients: Purified water, Polysorbate-20, Propylene Glycol, Nonionic Surfactant, Tea Tree Oil, Preservative, Bitter Agent. Caution: Keep away from your eyes and pet's eyes. Always unplug electronic devices before spraying power cords. May stain surfaces. Always test on a hidden area for color-fasting and spotting before using. If color loss or spotting occurs, do not use. Size: 8 fl oz (236 ml)