Indigenous Pet Products Dental Health Bones Original Fresh Breath FlavorThe patented design of Indigenous Dental Health Bones helps clean teeth and freshen breath, while fighting plaque and tartar build up. They are safe and highly digestible for all dog breeds and sizes. Dental Health Bones are made with ascophyllum nodosum, a natural kelp harvested from the clean, cold North Atlantic seas of Canada, Iceland, and Norway. This kelp is a rich source of nutrients and is free from artificial colors and preservatives.