Nylabone Dura Chews are designed for powerful chewers. The tiny bristles that are raised during chewing helps to clean teeth. It will also keep your dog entertained, engaged for hours and encourage non-destructive chewing. It is important to select the proper size and type of chew for your dog’s age, weight and chewing strength. Non-edible chews should be large enough to encourage chewing from the side, rather than top and bottom. If you have more than one dog in your household, select chews appropriate for the largest, strongest chewer. Always supervise the use of all chews and toys. This product is not intended to be eaten or ingested. Inspect before giving to your dog to ensure it is whole and intact. Replace if worn or damaged. Hand wash with warm, soapy water and rinse thoroughly. Souper size is recommended for dogs over 22 kg (50 lbs).