Safe Effective:100% Silicone is BPA and Phthalate free.360 degree 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. Also works great for larger dogs as long as your finger can reach their teeth. 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 Gums: Silicone bristles are softer than traditional bristles, but abrasive enough to remove plaque. The gentle nature of fingerbrushes tend to be more accepted by pets.