The Mr. Clean Magic Eraser, which hit the U.S. market in 2003, has garnered an almost cultlike fanbase — and for good reason. We have reported on the Magic Eraser's impressive ability to tackle seemingly impossible housekeeping challenges, from dirty hubcaps to filthy baseboards. In fact, the Magic Eraser does seem to be, well, magic. So much so that it makes many people a little nervous. How can this little white sponge succeed where so many other products fail?