Giving Drive-Up, Drop Off A Whole New Meaning

Well the local homeless population seem to have confused the idea of a library drive-up window with that of a port-a-loo.  Our maintenance staff keeps having to clean up poo and vomit from around the drive-up window.  Crazy thing is... the window faces a major intersection on a highly traveled street.  Guess they have no fear of dropping trou (amongst other things) in public view.