ProDen PlaqueOff Mini Dental Bones are dog chews with the PlaqueOff System which help clean plaque and tartar by abrasive action. The bone's unique shape and abrasive action helps to remove plaque and tartar, helping to freshen breath. They're grain-free, gluten-free, soy-free, and are made with natural ingredients. Used daily, this natural product made with sea kelp can complement ordinary dental hygiene.