Wipe your ear plugs with an alcohol swab to kill bacteria. Throw the alcohol swab out after use. You can buy alcohol swabs at your local pharmacy, grocery store or all-purpose retail outlet such as Target or Wal-Mart.
Place the ear plugs in a small container of rubbing alcohol or hydrogen peroxide to keep them clean. Allow the ear plugs to sit in the liquid for several minutes. This method can be used on occasion, but use alcohol swabs for everyday cleaning. Use at least 70 percent Isopropyl alcohol to sterilize anything that may accumulate bacteria over time.
Boil about 1 qt. of water and carefully place your ear plugs in the pot. Do not drop them in too fast, as the water may splash and cause burns to your hands or other exposed skin. The boiling water will kill any bacteria on the ear plugs and will also infiltrate holes and surfaces you could not reach with alcohol swabs. Be sure to read the directions that came with your ear plugs prior to attempting this, as some models may be damaged by heat.
Clean your ear plugs using warm water with a bit of anti-bacterial soap applied to a clean, soft cloth. This type of soap can be found in most stores and can kill up to 99 percent of the bacteria that may be on your ear plugs. Use a clean cloth to remove any visible ear wax or debris. Rinse your ear plugs after cleaning them with soap. Allow them to dry thoroughly before using them again; you do not want to introduce any liquids into your inner ear that may cause an infection.