[5] Will the residents store undesirable greasy/oily things in them (such as parts from the engine they pulled from their cousins truck and intend to rebuild--for 3 years and never do--then move leaving you with a huge greasy/oily mess)?

Yeah, it was greasy what he did, but that's the way it goes in this business. 

There was a headline a few years ago that said: A double cheeseburger or a house?

The top of the kitchen cabinets had a half inch of greasy dirt.

And before anyone decries "cabal, CABAL, they did it to us" let me ask you, if a person opens a restaurant serving double bacon cheese burgers and other cholesterol rich foods, is it a cabal to serve health endangering foods, are they with secret mission to kill people, or are they simply serving something people really like, line-up to buy, giving the people what the people want as evidenced by the people "voting" with their consumer actions?

For a project this size, a general contractor is easily a $10 million expense if you get stuck with a greasy GC.

In most cases an auger/snake has cleared it out, but in one case it had a lot of greasy build up and the snake would go through it and the goo would just close up again after the snake was pulled out, so we had to use a jetter on it that time.

Maybe for someone else but i paid money every month and I should of spent it on cheeseburgers. 

:@James Wise  Hahaha looks like an auto mechanic with car oil all over their hands used that couch as a rag Or a savage with greasy hair.

Invest in my own backyard since I’m new at this or go grab my “ cheeseburger in Paradise”?