How to clean White MC ?

  1. Any ideas on how to remove dark spots on the white bumps (usually in the corners?)? I tried baby wipes and pencil eraser and they did not work .

  2. how about using some soap and a toothbrush?
  3. Try Dawn dishwashing liquid and a cloth. I wet the Dawn with water and used it to get denim transfer off the back of my azur speedy...worked great!