Developed with veterinarians. Reduces plaque and tartar by 56%. The Tooth Scrubber was developed with veterinarians for dental hygiene. Our technology features dental tips and rotating rubber rings to gently massage gums and help clean teeth of tartar and plaque. To enhance the cleaning benefit of the Tooth Scrubber add a small amount of Hartz Dental Beef Flavor Toothpaste between the rubber dental tips. (Use outdoors or in uncarpeted areas). Made in China.