Call Today! Harper Hearing Services (480) 719-3094 Visit Our Website! http://HarperHearingServices.com 1007 E Warner Road Tempe, AZ 85284 Maintaining the Health of Your Hearing Aids Your hearing healthcare professional should guide you through the maintenance process at the time of your fitting. With a dry soft cloth, wipe down the exterior of the instrument. Using the wax pick provided, remove any build up of ear wax or debris from the sound port and vent.