how often do you walk him? any book that you read about dogs that typically have chewing problems will say, "walk your dog twice a day for half an hour." it works! and i do not mean go take your dog and exercise him out in the backyard. you have to actually put him on a leash and walk him twice a day. also, make sure that you only have 2 toys out per dog in the house, period. they need to be taste good toys. such as, bones, kongs fill with goodies, bully sticks (dried beef meat that is hard and comes in a stick shape), ect. if it tastes better than your couch then he will be more likely to chew on it. try not to give him attention when he chews on the couch by only telling him that he did wrong ONE time with ONE word such as, NO or WRONG. Then take him buy his collar and put him in a time out for 10-15 seconds. after a few times of that he'll put 2 and 2 together and realize that...wow, i chew and i get stuck in a room by myself and away from my mommy. that sucks, i won't do it anymore. that might be the big help since he seems to be doing it for attention. really really really make an effort to walk him. all dog owners that have ever hired me to train their dog and help out with chewing tried it and it worked....with in a week.