I'm trying to talk him into letting me pull it up. And atleast put that wood colored linoleum down. Well, not glue it down, just lay it down for temp. He's kind of iffy. I said, I don't know if she's still peeing there. All I know is I can still smell it and see it. Tho it's not strong when you walk in the room, I smell it when I'm on the floor. I have a black light. But I can't tell new stains from old ones.