(Which reminds me, I need to make sure they're in good working order before I hand over the check...)Your solution is the fairest one for both parties, and keeping it separate from the rent/security deposit transactions is a good idea just in case anything happens.Thanks again.

We train investors to be SOLUTION PROVIDERS for sellers with a bad house or in a bad situation.  

Marc, one of my project managers likes to think he is an outdoorsman, so he set some traps (actually to catch crackhead thieves) but ended up with a different catch.Hilarious 2 minutes: http://youtu.be/hl1wp5vvORUOh, and to answer your question, my humane solution to you would be do the OPPOSITE of what you see in the video. 

The best solution I've come up with is to remove the vent cover and clean it very well.

Very high tech solution...

The typical solution for a second note holder (you) would be to buy out the first lien position.Did you sell the first 85 payments and keep the second 85 payments which you won't collect until after the first is paid off (in about 5 more years)?

However, when you, as a whokesaler act as an intermediary who merely controls a property via contract rather than as record title holder, don't be surprised when other attempt to out maneuver you at your own game.The solution is to formalize your sales funnel and vetting process so as to minimize your time with unqualified, non-principal buyer prospects. 

What solutions have you seen for housing the homeless and getting them back on solid ground (those that WANT to be able to get jobs, rebuild lives, etc.?

I would tell the next buyer about the situation and the solution, and let that guy deal with her.

What do you folks think about RE agents who have homes listed that are about to go to the Foreclosure auction but don't actively try to sell the property or let their clients know about alternative solutions?