Wallpaper Cleaning
General Information
Most modern wallcoverings are labeled "nonwashable",
"washable", or "scrubbable". If your paper wasn't
labeled, but you have a small piece, take it to a
wallpaper dealer and ask them what they would recommend.
Or test an inconspicuous area (as behind furniture) by
wiping it with a damp cloth;if the wallpaper does not
change in color or appearance, it probably can be safely
cleaned as a washable wallpaper. Always test any cleaning
method in an inconspicuous spot before trying in on a
wall open to view.
Vacuum off dust frequently. Don't let paper get too
dirty before cleaning it.