My first yorkie chewed the kitchen cabinets and I used an apple bitter it was in a tube. It was like Vaseline so I put that on and he never chewed again. My little Kinder here used to eat her poop but pineapple did the trick. I t took about a month and she never ate her poop again. As one of the others mentioned excercise and playtime to burn off some of that energy. Hope this helps. Susan |