1. Erase as much ink as possible without scratching the marking surface of the board.
2. Use EXPO Dry Erase Whiteboard Cleaning Spray, also available as EXPO White Board Care Dry Erase Wipes.
3. If ghosting or staining remains, you could use a small amount of rubbing alcohol on a clean, soft towel.
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Disclaimer:
Please note that except for repair or replacement components, tools, services or other materials provided according to the terms of an applicable written warranty, EXPO does not make available or guarantee the availability of any components, tools, services, or other materials related to the maintenance or repair of our products.