These combine sweet potato and fine ground oyster shell for a unique, fully digestible dental treat. The oyster shell has abrasive qualities that help remove teeth plaque and tartar, and the sweet potato delivers a tasty treat your dog will love! Every dental stick offers your canine with an assortment of vitamins and minerals found in sweet potato, oyster shell, fish, dried citrus pulp and coconut oil. This is dog dental care made easy!