Wow! Nature's Miracle sounds like the thing I wish I'd had when the tenants moved out of my current non-co-op building. I steamed the carpets - smelled worse. I removed the carpets - better, but it still smelled. I removed the floor - better but it still smelled in some places. I removed the subfloor - success! Fortunately the floor joists were not contaminated or this landlord's tale would be continuing into the basement catacombs (no pun intended). The tenants were still surprised when they did not receive their full security deposit.