Is is possible to remove urine from nubuck. the dog used the corner as a pissing post. I told them I didn't know of a way other then replacing the section.
I don't know any way to remove 100%. What can be done is to clean an entire piece or panel of the leather. This removes some of the urine but mostly dilutes and spreads it around a much larger area. The stain is less noticable. Then deodorize. A mist of Hydrocide helps.