I was recently moving things out of a room I never use and found that my dog has urinated on the carpet at some point. It’s been so long ago there’s no smell. What can I use to get out this set in stain? I’ve read the reviews on Urine Gone and so many people say it doesn’t work. I tried using a green method of baking soda and vinegar, but that didn’t work. I then tried Resolve High Traffic and that didn’t work either. Please help.