When I lived in the Midwest, I'd always have to do a walk-through with the landlord whenever I moved out of a building. They'd go over the property, looking for broken doorknobs, dents, or holes in the wall, and it'd be your opportunity to argue about how much of your deposit you should get back. Ultimately it didn't matter how much you cleaned or argued--landlords made up their mind to either kept all your money or give you a little back well in advance. The last thing you'd always do before the landlord arrived was plug all of the holes you'd pounded in your walls with white toothpaste. It masked holes in the short term, and also gave your place a fresh, minty smell. They always fell for that one.