Cat urine in subfloors
I moved into this condo three months ago and am only now realizing that there`s a cat urine odor coming from many places. (I didn`t smell it in late spring...only when it`s very hot). This is an old house, and the former owner just put new bamboo flooring over the old subflooring...without doing anything to treat the urine stench. I found lots of "recipes" on the internet for how to deal with cat urine odour...but will that even help if I can`t even apply it directly to the source? No cat ever peed on this new bamboo floor...it's from before, it's underneath. Any ideas?