However, if pet urine has saturated the subfloor, 100% of the cleaning/sealing cost can be billed back.

Not just musty dog smell but a stronger one, like urine.  

Not only that but a powerful smell of cat urine from the 7 cats i counted as they ran passed me when i entered the front door!

I'm assuming the urine is in the padding.  

yea get all the info on the other guys, IF POSSIBLE, i'd increase the rent, but if ur in a area where ur kinda capped right now, leave it.

That's how far the pet urine was. 

seems like ur in the wild wild west back in 2005 up there where pricing is going up 6 figures in a year in some areas

Someone had beaten up all the walls and the carpets were soaked in urine.

It was treated with just about every product we could find for the urine odor.

First I am not worried about the pot, I am sure they would never leave it or risk a deputy coming in to evict them, I would be more worried if it smelled like cat urine, ( one sign of a meth lab)The math on this one is really flawed so it is hard to evaluate.First by paying for the house over market price but not being charged interest you are losing the deduction you get from paying interest, that is only partially offset by getting more depreciation.Second you can never prepay this thing as your interest is already in your cost to buy.