I have a 3 month old kingfish pitbull who has so far chewed and completely destroyed an entire loveseat and couch, a floor speaker, several lamps and my sanity. I was told to not physically strike the dog with any object such as a rolled up paper, but to yell or make a loud noise and show him to his chew toys. I have tried this, he does not show interest in any chew toys over anything else I would rather him not chew on. I have also tried using a souring spray that I picked up, the dog will still chew the item no matter how foul the taste. I have moved everything out of my livingroom to cure the behavior. I was told when I purchased the dog that he was going to be a chewing type dog but I am at a total loss of what to do. I also have a 5 year old American Pitbull in the home that is not taking too well to the little ones behavior.