You've got a pretty good routine down—you clean the toilets on Tuesdays, vacuum and mop floors on Thursdays, and dust in between. You're feeling pretty good about yourself. But you don't have time to really go into all those nooks and crannies that your regular cleaning doesn't touch. And it's weird because you were pretty sure you cleaned every inch of your house last week. But then why does a layer of grime still seem to linger on the window sill? You don't even want to thi