HIKISS Dog Chew Toy for Aggressive Chewers,Dog Toothbrush Chew Toy Stick Non-Toxic Rubber Dog Bone Toy Safe Reduces BoredomSafe and Non Toxic The polymer material extra firm and durable would not be brittle into pieces or broke into halves when chewed on. Made of non toxic polymer rubber. Tough to destroy and nearly Indestructible. Improves Dental Hygiene Help improve your dogs dental hygiene to keep them healthy and save money on your dogs dental bills. Interactive Chew Toy You may also apply a thin layer of treat paste such as peanut butter flavor prolong playing time.