3 sizes of dog toothbrushes: Suitable for all Small Medium Large Dogs. Choose the right size based on the size of the dog. Made of high quality rubber, nontoxic ,durable, 360-degree bristle configuration, bite resistance and easy to clean Bristly Brushing Stick is desiged to clean teeth on both sides and is angled to fit comfortably in your pet's mouth Easy to clean: Rubber material is very easy to clean and also can be cleaned in dishwasher. To keep the brush stick clean, we suggest to clean it before and after dogs chew it. 2-Side Bristle Line Grooves--Clean dog's teeth down to the gum line.