Magic stripped the dirt from the walls, and magic piled it into a tidy mountain, and magic swept it all up and into a bin.  When she looked at the toilet, Hermione considered that perhaps there were limits to how much labor she was willing to do to make Jean comfortable, but she did know a bunch of charms just for this courtesy, again, of Molly.  A woman with six sons and a husband, she had taken the time to customize charms to clean up loos and she'd passed that knowledge on.  The toilet turned spic and span in less time than it had taken to tidy the bedroom.  The magic even left the faint, antiseptic scent of bleach in the air.  