It is made from natural rubber material, which is safe for your pet’s teeth an gums. It will help you cleaning your pet’s teeth and massaging your pet’s gums and tongue. It’s effective to reduce dental plaque and tartar breeding. It is convenient use to train your pet. You just need to put the food between the thorns to attract your pet’s attention, which is effective for dog’s intelligence development. Soft rubber - heavy duty. Even though the treat ball toy is made of soft rubber gentle to the touch and atraumatic, it is bite resistant and durable. Please fill the grooves with peanut butter or kibble, it can certainly help inspire your pet. It clean up pretty easily. Soak it in water and dish soap.