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 Safety Natural Rubber and Easy Holding Base. Perfect combination:The exquisite dog bowl allows the dog to enjoy the perfect food. When starting to chew the toy, it is equal to brushing the teeth. It removes tartar and food debris from your teeth, helps prevent oral diseases, and keeps your breath fresh. Usage: 1.Allow your dog to chew on the Brushing Stick for Dogs for about 10 minutes at a time. 2.This is enough time to clean his teeth, but not so long that he ’ll get bored of it. 3.When his or her 10 minutes are up, you should take the stick and put it up until next time.