The Multipet Chilly Bone was developed with veterinarians and is the most effective product for relieving gums and teeth during teething or old age. Simply soak or fill this toy in water and freeze in freezer overnight before allowing your dog to play with it. The cold will ease many teething problems. while chewing, the toy cleans teeth and promotes good chewing behavior. If bad breath persists, consult your veterinarians as bad breathe can be a symptom of other probles.