Will Vinegar Harm Paint on Stucco?

I am in a bit of a dilemma. A building that we clean is having an issue with stray cats marking their territory on the stucco, and the urine smell is seeping into the building through the AC/Heating air vent. The owner of the building called me today and asked if I could remedy this problem for him. I have found numerous natural solutions online concerning what to spray to hopefully prevent cats from spraying; vinegar being the most common solution, but what my concern is, could the vinegar harm the paint in any way. The owner just had the building painted within the last year so I don’t want to spray anything on there that might stain or bleach out the paint. Could anyone give me a little insight, I’ve looked online and I can’t find the information I need.
Thanks so much!