I heard this from a coworker. It's funny.
Someone calls a repairman for anything. Maybe an appliance, or to install carpeting, or a plumber. But it's a well known repairman who robs everyone. Call and tell him it's an emergency and he must come immediately.
Before he arrives, put a sign on the door that reads:
"Warning, the owner of this property has no control of his bowels. You really DO NOT want to see what's on the other side of this door. Enter at your own risk".
Then sit back and watch the guy thru a peephole. Be sure to have your camcorder ready. Most guys will leave and be pissed because they made the trip for nothing. The real greedy ones will actually knock on the door. DON'T ANSWER IT, (OR) Answer the door and just open the door a crack, tell the guy the piles are so deep behind the door that you cant open it further. Then tell him he will have to come back after you get someone to dig out the shit by the door.