How do I remove permanent marker from a whiteboard surface?

For most whiteboard surfaces, applying dry-erase marker directly over the permanent marker and then erasing both together often removes the permanent ink through solvent action. Isopropyl alcohol (90%+) on a clean cloth is the most reliable method for stubborn permanent marker. Avoid using water alone, which won't dissolve permanent marker ink. OfficeFurniture2go.com carries whiteboard cleaning supplies — call 1-800-460-0858.