Dog pee soaked hardwood floors

[Katharine Chartrand]

I bought a fix and flip from a guy who lived for years with 3 dogs letting them pee inside the house.

The house is being gutted and completely remodeled. The floor has to be strengthened by adding a 2x4 floor on top of the original floor.  There is no question of keeping the original wood floor.  The issue is that the floors are so soaked with pissed, they still stink 3 months after I purchased the house.  

Do I need to worry about the smell?  Will the new floor hide it?  Will it go away after a while?

If so, is there anyway to treat the floors to neutralize the smell?  I am not worried about keeping the floors so dumping bleach on them would be fine, for example.

>KNC<