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 Encourages pets to clean their teeth every day; Designed to clean teeth on both sides and is angled to fit comfortably in your pet's mouth. Whole Protection: Dogs often use chew toys on one side of their mouths. It is not a guarantee of getting all teeth surfaces clean. The toothpaste reservoir can inject toothpaste and come out through 6 small holes,With our 360 degree toothbrush, the owner has more control over which surfaces they're cleaning and the level of vigor. 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.