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Question DetailsAsked on 7/31/2013

how do i get rid of cat urine smell?

we purchased a house with a crawl space. We were told by neighbors that a lot of cats and other animals had lived under the house in the crawl space as well as in the house. We have wooden floors and tile throughout the house. we had a handy man clean out the crawl space and spray it with an enzyme but the smell remains. the smell is concentrated in certain rooms of the house. what can i do?

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1 Answer


I presume you have closed on the house and can't back out ?

There is a product called Out - I know is is available at many pet stores, at WalMart, Amazon, and others - works well but you cannot do an entire crawlspace with it.

I would smell around the crawlspace area and upstairs - figure out if it is coming in from below or from the rooms - your problem may be upstairs.

For the crawl space, if that is the primary source, I would do one of two things - neither too cheap

1) have your handyman take spray foam and caulk and seal up every opening and penetration in the floor from underneath

2) place hydrated lime (white outhouse lime, NOT ground garden limestone) mixed in with the dirt over the entire crawlspace. However, that would mean anyone working under there in the future (plumber, electrician) might balk at crawling in it as it burns the skin or

3) dig out about 3-6 inches of dirt over the entire area and dispose of it. If you have individual concrete block type foundations under posts, replace the removed dirt and tamp it down for about 1 foot all around the footings to maintain lateral support on them.

I suspect, since it is stronger in some rooms, your problem may be upstairs. The tile should clean up well with bleach and tile cleaner, but wood floors are iffy, especially as urine probably saturated the baseboards and ran down under the flooring edges into the underpad (if floating) or subfloor (if nailed-down) as well.

Obviously, any carpet that smells should be tossed.

Avoiding a major tearout expense, not knowing where the problem is, I would start with a thorough top-to-bottom professional disinfection and cleaning by a company specializing in trashed and crack houses. Will probably cost about $1000 rather than the usual $250 or so, but usually involves a chlorine disinfection and borax pass first, then washing with TSP or similar. This may dull your floor finish, but can't be helped. Then maybe you can pin down specific remaining problem areas.

Google this search phrase for other buyer's experience and what they did to solve it - from what I suggested above to total repaint and reflooring - cat urine smell in house

Answered 7 years ago by LCD

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