Nature's Miracle No-Chew Deterrent Spray contains calming pheremones which, when smelled by pets, help decrease anxiety. These pheremones soothe pets to assist in minimizing excess energy which leads to boredom and may trigger destructive chewing. Concentrated, water-based formula contains bittering agents which leave an unpleasant flavor that safely discourages pets from repeating chewing and biting behavior. Safe to use directly on pets' hot spots, wounds, and bandages. Alcohol free - will not sting.