The Mr. Clean sponge is amazingly abrasive, that's why it does such a good job taking marks off the wall, and often the paint with it. If you scrub anything polished with that sponge, don't be surprised if that ends up being the dull spot. We use SoftScrub GEL, not the white stuff that is akin to rubbing compound. The gel is easy on everything and does a great job.