360 DESIGN: Patented design allows easy cleaning of the entire mouth with just a few swipes. Pet owners can finally provide a thorough teeth cleaning for their dog or cats with ease. FOR SMALL & LARGE PETS: Compact design works well on smaller dogs, cats, and puppies. Also works great for larger dogs as long as your finger can reach their teeth. Note: it may not work as well on extremely small pets, such as toy breeds. FITS THIN & THICKER FINGERS: JUST ADD WATER Adding a few drops of water inside makes the silicone expand for larger fingers, and creates a seal for smaller fingers - no more slipping off in your pet's mouth SOFT AND GENTLE FOR SENSITIVE PETS: Silicone bristles are softer than traditional bristles, but abrasive enough to remove plaque. The gentle nature of fingerbrushes tends to be more accepted by pets. SAFE & EFFECTIVE: 100% Silicone is BPA and Phthalate-free.