EarPeace is easy to clean and maintain. Wipe the ear plugs off with a damp cloth (e.g. wash cloth) each time you wear them. Keep them stored in the aluminum case. If they become particularly dirty you can wash them in warm soapy water - however - remove the plastic attenuation filter before submerging the plug in water. Reinsert the filter only after the plug has dried thoroughly. The ear plugs should be replaced at any sign of wear and tear.