Daily : ordinary dirt spots can be removed with a mild soap and warm water. blot wallpaper dry with a sofl cloth.
Surface damage : Sharp objects can damage the surface so not to rib or scrape on the surface.
Lacquer and shellac : remove immediately with a dry cloth; take care not to spread the stain. Wipe clean with rubbing alcohol or perchlorethylene (technical grade). Rinse with clean water.
Ballpoint pen ink : remove immediately using a cloth dampened with rubbing alcohol.