Using the KONG Puppy Link ChewStix is simple. Just give it to your teething puppy and let them enjoy chewing. The toy is designed to satisfy their natural instincts. When choosing a size, make sure to refer to the weight - based size recommendation. For dogs between 25 - 65 lb (11 - 30 kg), the medium size is a good fit. Keep in mind that these ChewStix are not for dogs over 120 lb (54 kg) or under 10 months old. While your puppy is using the toy, always supervise them. If the ChewStix gets small enough to be swallowed, take it away right away. There's no special maintenance required, but you can occasionally wipe it clean with a damp cloth to keep it fresh and hygienic.