The Rosmax Dog Cleaning Stick Chew Toy is made of 100% non-toxic natural rubber that is non-toxic and eco-friendly. This toy is strong enough to withstand dog bites and chews, more durable and long lasting. It features a concave and convex groove design and a serrated brush head for cleaning teeth and protecting them from oral diseases. The toy is easy to clean with soap and water, and it comes with a money-back guarantee if you’re not satisfied with our product.