Yeah, those ads, they're meant to get inside your head and SELL SELL SELL you. Not that you didn't already know this but.....I can't even begin to tell you how deep this goes seeing I've been in the direct marketing industry for over 20 years now.
I think the only think I've ever purchased in my life that worked as easily and exactly the way it was advertised is the Mr Clean Sponge. Shameless plug here. If you wait just a tad bit too long to clean your tub (like me) you then usually spend time having to apply some real elbow grease with some toxic smelling cleaning agent. With this sponge you don't even need gloves. Wet it, ring it out, and even the worst tub will be sparkling in less than 10 minutes. Sure, the longer you've waited it may take a little more elbow grease but this little puppy is unmatched in cleaning. No, I don't own stock in Proctor and Gamble :p I'm just amazed something did exactly what it said.