Most hearing aids today utilize what is called “nano-coat” technology. This is a microscopic coating that protects the electronics from moisture, sweat, and dirt. If hearing aids have a nano-coating, they are resistant to damage if you splash them with water, get in the shower with them accidentally, or wear them to the gym and sweat with them on. However, it is still important to avoid submerging the devices underwater, and to avoid getting them wet when possible. If you do get a hearing aid wet and it stops working, open the battery door and put it in a jar of rice for 24 hours. If it still isn’t working it may need to have parts replaced or be sent in for repair.