I am having the same issue with Buster. I have tried the "Bitter Apple" spray and he seemed to like it. Actually licked it off the couch and (arms of the chairs) and then preceeded to rip the arms of the couch and chairs down to the wood. He has just turned a year a few days ago. I can't afford to keep buying furniture if he's going to keep ripping them to the wood frames.
Any other suggestions besides the "Bitter Apple"?
Thanks - Hana