Keep your hearing aids in a safe place
If you will not be using your hearing aids for a long period, make sure to switch them off, remove their batteries, and store them in a dry, cool place.
Moisture build up is one of the most common reasons why hearing aids need repair. To avoid this problem, you can invest in a hearing aid dehumidifier or drying container. Simply remove your hearing aid batteries and place the hearing aids in the container. Overnight, the dehumidifier will dry them out.