
I agree with Brainless maybe kennel your dog up when your not able to watch 100%... You never know what he may get into that may actually hurt him...
Or when you see your dog chewing try spraying him with a spray bottle but don't let him see you, this way he will think its his actions causing the spray- or even a can filled with rocks something loud you can shake... When you see him chewing stuff offer him a special chew toy that he only gets in return like a stuffed Kong...