The wallpapers are washable. It should periodically sponge-washed with soap solution and warm water. It should be lightly scrubbed but never use an abrasive cleanser, rough surfaced sponge, or pumice on it. They are damp proof so are not affected by atmospheric dampness. They are colorfast so washing will not result in loss of colors. Use an extended duster or an electrostatic dry dust cloth, and wipe down, left to right.