Cat Urine in Basement Floor (Dirt) - Help Please!

[Chad Jarrah]

Hello all...I bought a property with a heavy cat urine smell - removed and disposed of the carpets; sealed in all the wood. The problem I'm having is with the basement. Part of the basement has a dirt floor with limestone or flagstone on top of it. This is where the majority of the smell is coming from. I've tried spraying bleach, then Lysol. Then I tried Clorox urine remover for stains and odors - this was highly reviewed - none of these items seemed to work. Maybe from years of urine under the limestone or from ineffective products but nothing has worked as of yet. I was thinking of getting a few inched of concrete poured over everything. My first question is: does anyone know if the smell would be able to seep through the cement? Second question: I'd love to avoid the cost of poring concrete. Any sure fire methods to get rid of this smell once and for all?

Thanks in advance!

[Josh C.]

I agree with Jim. It would be a bear to break up and remove existing. Put down some absorbing agent. Heavy plastic and pour 3 inches or so of concrete. If the basement is very large you might go thicker, cut in stress fracture points, or lay in some mesh to avoid it cracking badly. Ask your concrete guy what he would recommend.