A diamond plate is my preferred weapon of choice.
Depending on the stone needing cleaning, I'll use anything from a 140Grit to a 1200.
Atoma or DMT are good choices. IMO
Yup... Erasers do work.
When I bought my first Spyderco Sharpmaker from a state fair booth about 30 years ago (?), I was shown that scrubbing with Comet and a little water would remove most of the accumulated swarf (is that a correct term in this case?) from the ceramic sticks. I was also told that hard erasers - back then we called them ink erasers - would also work. Not as good as scrubbing with Comet, but it works.
Lately, I've been using the "Super Eraser" available online from Wicked Edge. I also have one of the rubber bars as shown above. I'll have to give it a try.
Amazon has the Lansky version at http://www.amazon.com/Lansky-LERAS-3...S+ERASER+BLOCK
Wicked Edge sells theirs a little less expensive at http://www.wickededgeusa.com/products/accessories
I can't tell from the ads if one is bigger than the other.