When I was managing a music store back in Atlanta (back when there were such things) we had an unfortunate policy where we let customers use the restroom. Since our store was kind of downtown (Ansley area as a frame of reference for sd, intersection of Piedmont and Monroe) I was really against this policy, knowing that our "clientele" included various urban outdoorsmen that would kill time listening to music in our air conditioned store, occasionally stealing or being crazy or just generally making my store smell like homeless person. I threatened my boss- as soon as someone did something disgusting in the bathroom, the customers no longer would be able to use it and the boss would have to drive down to clean it up.
So of course one day this nasty homeless woman goes in there for a good half hour, then after finishing promptly leaves the store. A little while later one of my employees goes in there and almost barfs. This woman had smeared shit ALL OVER THE WALLS. And the door handle on the inside. Just about everywhere, really. That place stank like hell. I sprayed an entire can of air freshener in there and called the boss, who as luck would have it was on the way to the store for a visit. I neglected to mention the bathroom to him until he showed up, when I handed him some gloves, bleach spray, paper towels and a trash bag and told him that customers were no longer allowed to use the shitter. He cleaned the place up without complaining, but when he was done he wrote me up for "being a dick" and made me take him to a strip club that night.