Magic Sponges are non-toxic and safe for household use. They are abrasive, however, so you don't want to rub them against your skin or let your kids get ahold of them.

Is Magic Eraser toxic to kids?

Swallowing a piece of this dry foam can be difficult which could make the child gag and choke while trying to get the piece down. ... The sponge is made of a superfine foam which can result in rashes or burns, even with gentle rubbing. Because of this, the Magic Eraser should never be used on a child or adult's skin.

What is the magic eraser made of?

Magic Erasers are made up of a melamine foam, which has undergone heat compression to increase their durability, explains Brashear, who says that this is the extent of their manipulation.