My Pit mix was into this big time. We tried all the usual stuff, Adolph's, ForBid, etc, and they seemed to make him want to eat more of it! When I had two other dog's, he preferred my Lab's loads, but after he died, he ate his own, and on a walk, he would "snack" the entire way, if I let him. Finally, we started giving him vitamins (Pet Tabs) as just a desparation move, and after a couple of weeks, he started passing up "treats" and not long after that, quit totally. If we ran out of pet tabs, or just stopped after we ran out to see what happened, he would start again.