Where's the magic, Peter?

    I read your column every Sunday in the TU's "Handyman On Call" column.  Most of your recommendations  and suggestions seem well-advised, though I have not had occasion to put most of your advice to use. You have often highly recommended "Magic Eraser"  as a means of removing many different kinds of soil and stains from a variety of materials.   Based on your glowing endorsement, which seems contrary to your usual curmudgeonly nature, I bought some of the product, and I just don't see the magic. So far, I've tried it on everything from walls to furniture to vinyl with no more success than a damp cloth.  The stains remain; what's up with that?