The kong Puppy Teething Stick® is made with unique kong classic puppy rubber. The Denta-Ridges™ gently clean teeth and soothe sore gums when chewed. Fill them with easy Treat™ or peanut butter to encourage long-lasting play sessions. Playing with the puppy Teething Stick® helps teach puppies appropriate chewing behavior. Use with puppies until they reach nine months, then they can graduate to kong classic rubber toys.