Pruven bitter apple spray discourages destructive chewing, biting and licking. It"s a great training aid to use with your new puppy. Pruven bitter apple can keep your puppy from chewing on your furniture, and it"s safe on both wood and fabric. It"s safe to use on you pets" hot spots, wounds, bandages too. And don"t worry, it won"t sting when sprayed on your dog.