Yogi, (the first pic) licked a hole right through the dry wall once... I just about shot through the roof. It was just this one spot on the drywall in an old apartment that he would lick and lick whenever he was out... until I introduced some Tabasco sauce. Stopped that dead in it's tracks. He took one lick and then rolled over on his back and peed on himself. I felt bad, but I couldn't keep patching up that drywall!