Not saying this will happen of course but may be penny wise/pound foolish. 

Tell em to pound sound.  

There is an old adage that rings true many times Penny saved, Pound foolish.  

Thought it was that some Freon was lost in the line, adds a pound of Freon.

My unwanted business partner, the IRS has come a calling for back taxes.

It took about 60-80yrs for the Pound to lose reserve currency and before that took the Guilder about the same amount of time.  

If their mess is trash, consider more dumpster space.If their mess is junk mail put two covered commercial trash bins near the mail pickup station.Post a red paper folded in half on their door with tan masking tape at eye level.In it say you will stop by in a day or two to introduce yourself, include a baked cookie recipe, and a silly joke.The next day start door knocking (Saturday might be best).Spend 10 mins with each one just at the doorway, talking about the problems and ask for their help solving them.Ask them if they have any problems too, ie. maintenance way behind schedule, spooky characters in the lot at night, etc..You could also tell them if the problem is fixed in 90 days or so, you will hold a drawing for a $25 gift card to the closest grocery store--but they have to be current on their rent.If it's fixed--pay for the gift card, and do the drawing and let everyone know who the winner is.If it's not fixed, red letter tan tape at eye level, saying its not fixed, so no drawing, but ask the to please keep working on it.You might want to clear the $25 gift card with the owner though, some are pennywise, pound you know what.Note: If you are in a general area with Red/Blue gang territory don't use red paper, just use white printer paper.

Sssimetimes the servicer will drop them pounds 

If I were a Realtor, I would advise they tell the seller to pound sand.

She is about 4'10 100 pound soaking wet!