Keep furniture away from the walls, open windows/use fan in the bathroom, wipe mildew with a warm/hot water and antibacterial soap solution, etc.Although I agree the dollar amount is so small it’s not really worth a fight.

A rinse problem is usually related to the type of soap.

2) Given the root causes of the great recession, many regulations and safeguards were put into place in hopes of lowering the likelihood of such a crash happening again. 

Do a quick search of "how many people didn't pay their rent" and you will see links to articles on the first page stating anywhere from 4% to 40% didn't pay.The rooting-for-disaster NY Times says that 31% of people didn't pay rent by the 5th of April of this year.

Very specific tree saving measures must be done to make sure root zones don't get compacted by equipment. 

ooouch, i just fell off my soap boxIs it wrong for me to chime in on this thread with snarky irrelevant humor?

We certainly will be doing a root-cause analysis of this situation to learn and grow moving forward.  

Ok I understand, sorry I did not see the intial thread before my soap box lesson.

We snaked it, put tree root killer down the drain and I haven't heard anything about it since Feb.Whew!!!

I'd charge a holding deposit and collect it so that if they back out you have something for your lost time.I give my applicants less consideration if they are moving from out of the area since they are less likely to stay long if they don't have roots, but I have found that in my area and probably isn't prevalent.