Cat Urine Smell

[John Kaftan]

Looking at buying a house that had maybe 50 cats in it so it reeks of cat urine.  I already know I am going to have to replace all of the hardwood floors and probably the subfloors.  Does anyone have experience with this?  I am worried I will do all of that and it will still smell in there.

[Henry T.]

I would second what Malcomb is saying. totally oak those floors and vents.  For walls I spray with one of the various neutralizers for pet urine on the walls. after dry,  follow up with a vinegar solution. Then final with a PVA primer sealer.