Nylabone DuraChew Bone is designed for powerful chewers. The bristles are raised during chewing help clean teeth and control plaque and tartar build-up. Very healthy alternative to rawhide Materials: Nylon, natural flavors Duration of treatment: Use as directed Package contents: One (1) bone Safety: These bones are non-digestible This supplement is for animal use only. Keep out of reach of children and other animals. In case of accidental overdose, contact a health professional immediately. Consult with your veterinarian before using this product. Due to the personal nature of this product, we are unable to accept returns.