I’ve never used a Magic Eraser on a pearlized pony, but I probably wouldn’t try it. Even if it doesn’t remove much of the paint, it’ll probably dull it, even with a light touch. I’ve cleaned mine with my bare hands and some dish soap, and the results were very good. If you’re dealing with just regular surface dirt, you can probably get decent results without the magic eraser. If you need a bit more scrubbing power than your bare hands can provide, try using a paper towel with some dishsoap on it.