Just so you know, you totally made me a believer of Magic Erasers. I thought they sounded like all hype, but at the store today, I saw a few boxes in the sale section, so I bought a 4-pack, and OH MY GOD. The dark grey soap scum in the bathtub that refused to budge with bleach and a scrub brush and made the tub look so dirty and disgusting that I hated to let guests use the bathroom in case they peeked behind the curtain and saw it? COMPLETELY WHITE AGAIN. I'm going back tomorrow to stock up.