Bad breath in pets can have a variety of causes, although it is often the result of bacteria that live in the pet's mouth. Beaphar Fresh Breath Spray is an easy-to-use product that promotes dental hygiene and helps keep your dog's breath fresh. For greater effectiveness, it is recommended to use in conjunction with a regular brushing regimen with Beaphar Toothpaste. Your pet's breath will improve in about two weeks. If bad breath persists, it could be a sign of tooth decay and you should visit the vet. A heavily stained denture would also need veterinary attention.