The KONG Puppy Teething Stick is made from KONG's unique Classic Puppy Rubber. The ridges gently clean teeth and soothe sore gums when chewed. Fill it with peanut butter or Easy Treat to encourage long-lasting play sessions. Playing with the KONG Puppy Teething Stick helps teach puppies appropriate chewing behavior. Use it with puppies until they are 9 months old, then they can graduate to KONG Classic Rubber Toys.