I saw on line that vinegar works, but so far no. I also bought this stuff called NO GO ? and a friend mentioned bitter pple ?
It’s honestly nearly impossible unless you are able to clean the mess from the carpet, padding and floor board. Dogs can smell literally everything. So I have invested in a carpet cleaner to clean up my carpet. What I use is a enzyme cleaner from Rocco & Roxie it’s pretty good with removing stains and smells, but like I said before. If the Pee has went all the way to the floor board nothing will really work.
I have a BISSEL carpet cleaner and I use BISSEL cleaning solutions along with Angry Orange and Rocco & Roxie. I normally clean my carpets and sofas after every stay.
Bitter apple didn't work for me, I haven't tried no go. What helped me was using doggie diapers for a period of time to help establish the potty routine as mentions by previous response. The diapers are not for potty training but since my dog is already potty trained and was basically marking territory it helped him understand he can't mark with the diapers on. He was marking my bed so that was the worst :(
Clean the mess as well as you can and invest creating a potty routine. If you catch the dog in the act, instead of punishing him or her, just ignore the mess, and redirect them by taking them directly outside with some cookies in hand. Once he or she has gone potty, reward the behavior immediately after. If the marking is in the middle of the night pick up the water bowl an hour before bed and let them potty one more time before bedtime.