StarMark Everlocking Treats liver flavor – Large provide long lasting chewing enjoyment for your dog. The unique design allows you to “lock” the treat into place of your dog’s favorite interactive toys for challenging chewing fun. Dogs love Everlocking Treats as a healthy snack, or inserted into the Everlasting Treat Ball, Everlasting Fire Plug, Everlasting Fun Ball, or Everlasting Beanie Ball for hours of fun and challenging interactive play. Pavlovs dogs wouldnt have needed a bell to drool over these tasty treats! Removes Tartar Cleans Teeth Freshens Breath.