We live with our computers. We eat at our computers. We fall in love and cry at our computers. Of course our keyboards are festering petri dishes of filth. But you don't have to live in a perpetual ...

We know Mr. Clean “Magic Erasers” as the white pads with a shiny bald man telling you to remove scuff marks from walls. But these little scrubbers—known generically as “melamine foam sponges”—can ...