The KONG Puppy Teething Stick is made with unique KONG Classic puppyrubber. The ridges gently clean teeth and soothe sore gums when chewed.Fill them with Easy Treat or Peanut Butter to encourage long-lasting playsessions. Playing with the Puppy Teething Stick helps teach puppiesappropriate chewing behavior. Use with puppies until they reach 9 months,then they can graduate to KONG Classic Rubber toys.