kiltz works but you should at least soap and water wash the walls before you do it.

The host had their personal belongings in the closets, cabinets were stuffed with mismatched and chipped dishes and pots and pans, spice jars and inside cabinets were filthy, no tin foil, plastic wrap, washer/dryer soap.

Owners trying to rehab themselves often don't know little tricks such as adding a spoonful of dish soap to their mud to help eliminate air bubbles (and thereby, an additional coat), or that the process of coalescence in exterior paint is negatively affected by an ambient and/ or surface temperature below 50 degrees.Being from Cleveland, unfortunately I can't much help with the Milwaukee area.

As to the grease, buy her about $10 of dawn dish soap. explain that even a little grease can clog a sink when it hardens.

When he did, he found big globs of hair / soap scum in the master bathtub and sink.  

How do I assure them security and a return on investment when they don't know me from a bar of soap?

Supplies like toilet paper, laundry detergent, dish detergent, bath soap.

Having basics like soap, shampoo, etc is important but I don't think condiments, fancy towels, charging etc are ever expected or included unless specifically noted in the description (can drive more bookings depending on the market)

The marketing bullet points, even on the front of the can include:-Strong, factory-like finish-Fade, scratch, and scuff resistant-No sanding or priming needed-Soap and water cleanupOur cabinets are laminate (not real wood, I guess).

Do some light staging as well (maybe some flowers on a table, nice soap dispenser and trendy towel in the bathroom, etc).