Nature's Miracle Advanced Cat Stain and Odor Eliminator Spray, Severe Mess Enzymatic Formula For Tough Pet Messes, 32 oz

I had a really bad cat pee smell issue once, and sprayed everything with this. It smelled a little like the chemical for a week but it no longer has any scent at all. Maybe this will work for you. It's cheap and I didn't wash it off or anything, it just worked. It also should only take you like 10 minutes to spray the whole floor. It dissolves urine: https://a.co/d/051lI5CD As for the contractor, idk, small claims court maybe