I've been using Magic Eraser & dry brush for years, ever since @dougdeacon and others explain@bkeske and some other friends are fans of Blutak, including a Soundsmith employee.
@mulveling any opinion/concern regarding comments like "Magic eraser is an abrasive so I wouldn't go near a diamond stylus with it."
I THINK Magic Eraser is doing its job well, but I don't have a USB microscope etc. and can't confirm that no abrasive damage is being done. Cheers,
Spencer