Nylabone Advanced Oral Care&nbsp;Bristle Brush Nyla bone Advanced Oral Care Provides Easy Oral Care, Leaving Your Pet With Fresh Breath And Healthy Teeth And Gums Hands-Free Brushing That Massages Your Dog's Teeth And Gums Cleans hard-to-reach areas, scraping away plaque and tartar Designed To Provide Passive Brushing Technology Comes In 2 Sizes: Small And Medium Nylabone Advanced Oral Care provides easy oral care, leaving your pet with fresh breath and healthy teeth and gums Hands-free brushing that massages your dogs teeth and gums Cleans hard-to-reach areas, scraping away plaque and tartar Designed to provide passive brushing technology Comes in 2 sizes: small and medium