The best solution for marking on whiteboards and most non-porous surfaces. These dry erase markers use a specially formulated, alcohol-based ink with virtually no odor. The Expo markers feature vivid, quick-drying ink that is easy to see from a distance and a chisel tip that creates broad, medium or fine lines. The dry erase marker ink erases cleanly and easily from whiteboards and most non-porous surfaces with a dry cloth or eraser. Use your Expo Dry Erase Markers to track, schedule and present.