ProDen PlaqueOff Dental Care Bones are the first chews on the market which contain the 100% natural and clinically proven ProDen PlaqueOff formula. The bones have a dual approach to bad breath, plaque and tartar - they have an abrasive element, as well as containing the ProDen PlaqueOff formula to help prevent reformation. These Mini Vegetable Bones are specifically designed for smaller or toy breeds. Each bag contains 20 bones.