My 2 year old Border Collie mix is the hardest, most persistent, and fixated chewer that I have ever encountered or heard of in my life. "Indestructible" firehose material toys, rope toys, balls, and even frisbees look like they have been through a meat grinder in mere minutes with this dog. Though these sticks break apart into little (safe to pass) pieces resembling burrs that get entangled into carpets, blankets, and every pair of socks one owns, the amount of joy and distraction they provide See full review