Originally Posted by JazMan
Not sure how well those enzymatic products work, I've heard they do some good, but the smell returns, especially on humid days.
I have had no luck with Nature's Miracle but the brand I mentioned has worked out pretty well. As mentioned, with these bacteria/enzyme products you have to saturate the stains or they make little difference. They sell injectors for getting it under carpet and carpet pads, for instances since pouring it on top does no good. The bugs are photo sensitive and can die fairly quickly in sunlight too. And the challenge is the sub-floor physically falling apart if you get it to wet in a case like this where it is OSB material.
The safest thing to do is replace the pet stain sections if you can.
BIN by the way is, as mentioned, shellac based so be sure and use with adequate ventilation. No primer is really meant to hold up to foot traffic so you gain nothing heaping it on--your only goal is as a sealer in this instance.
In one of the other threads someone mentioned having reasonable luck with urethane (oil based) or epoxy (water based) floor paint to help seal the surface after enzyme treatment. I should think if you had leftover clear product it might work in similar fashion.