EXPO Low Odor Dry Erase Markers offer the best solution for marking on whiteboards and most non-porous surfaces. These whiteboard 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 fine tip that's perfect for thin, accurate lines. The dry erase marker ink erases cleanly and easily from whiteboards and most non-porous surfaces with a dry cloth or eraser.