It cleaned scuff marks, crayons off of walls, soap scum, and just about anything else we put it to the test with. So we think pretty highly of this product.
Then I get this email today warning me that these magic erasers are dangerous to children. One woman's child used it and then his arms and face (not sure why someone would use this sponge on their face) had burns on them from the sponge.
So I checked out the story on Snopes.com. (You have to go to the bottom of the page to see this claim.)
It seems that the products contain an alkaline base that it very harmful to skin. I have to be honest and say that I have never received a burn, or anything that resembles a burn, from using these sponges. But that doesn't mean that it can't happen in the future.
Please be careful when using these sponges. If you're not using all natural products, make sure that you wear rubber gloves whenever you handle any sort of cleaning substance, regardless of how "safe" you think it may be.