ProDen PlaqueOff Dental Care Bones Bacon Flavored for DogsDental Care Bones are the only chews on the market that contain the 100% natural and clinically proven kelp ingredient A. N ProDen. Dental Care Bones help oral problems with double action ProDen PlaqueOff System and the bone's unique shape helps to prevent new plaque and tartar from forming when used as directed, resulting in a fresher breath. They also contain omega 3 and 6 fatty acids and antioxidants that support immune health. The Bacon flavor is