Removes Damaging Daily Moisture. Easy to use and very effective. Simply place hearing aid into the Dri-Eze Dehumidifier and close the lid. The innovative desiccant lining will remove moisture for 6 months from the first use. User will not need to recharge or reactivate the desiccant. At the end of 6 months, simply replace with a new Dri-Eze Dehumidifier.