Hearing Aid Care and Maintenance
Daily care and attention will prolong the life of a hearing instruments. Keep the hearing aid shell as clean as possible, but do not immerse it in any liquid. Wipe it daily with a soft, lint free cloth. Clean the receiver and vent openings with the proper cleaning tool. This is best done in the morning before inserting the hearing aid as any wax left in the aid will be dry and flake away easily. A wax loop may be used to remove wax from the receiver tube, but be sure not to push wax deeper into the hearing aid. Do not use pins, toothpicks, or other sharp objects. 
Turn the hearing aid off when not in use overnight. Open the battery door to allow any accumulated moisture to dry. Store in a safe place - preferably in the protective case provided by the dispenser. Always keep the battery compartment clean and dry.
Do not store the hearing instruments with the battery inserted for an extended length of time. Remove the battery and store the hearing instrument in a dry place.
Never use hair spray while hearing aids are being worn. Also, protect the hearing aid from perspiration, oils, etc. 
Do not expose a hearing instrument to excessive moisture, humidity, or steam. Do not wear a hearing instrument while bathing, showering, or swimming.
Keep hearing instruments away from heat sources such as stoves, heat registers, hair dryers, or open flame. Keep them away from sunlight and do not use a blow dryer to dry them out.
Handle hearing aids over a soft surface such as a pillow, towel, etc. (avoid dropping them on hard surfaces). 
Remove the hearing aid for MRI, CT scan, or other electromagnetic procedures. 
On BTE's, avoid removing an earmold by the tubing. This will eventually stretch or loosen the tubing and result in feedback.   
Always store hearing aid batteries in a dry place at room temperature. Do not store them in the refrigerator or in excessive heat. Batteries should not be carried in a pocket or purse since metal objects such as coins or keys can short out a battery. A zinc air battery uses air outside the battery as a source of power. The tab is on the battery to seal the air hole and ensure freshness until you are ready to use the battery. To activate the battery, simply remove the tab, and insert the battery into the hearing aid. Replacing the tab when the battery is not in use will not extend the battery. Also, check to see if all the glue from the tab comes off with the tab. If glue is covering the air hole, the battery will not work. The glue can be easily removed from a battery by an erasure. 
Hearing aid batteries are dangerous if swallowed. In case of accidental swallowing, contact a doctor immediately or call the National Button Battery Hotline at 202-625-3333. 

Visually inspect the aid. 
Check the plastic tubing for possible stiffness, pinholes, or cracks. Also, make sure that the tubing is clear of moisture and ear wax. Check the aid to see if there are any cracks in the casing, or if the volume wheel, microphone, or receiver area (where the sound comes out) are dirty.
Make sure a battery is inserted in the aid. 
Be sure it is inserted correctly and there is no corrosion in the battery compartment. Insert a new battery if the current battery is weak or dead. 
Set the controls. 
For behind-the-ear hearing aids, set the switch on the back to “M” for microphone and set the volume on the lowest setting. For in-the-ear hearing aids, there is no “M” switch – just adjust the volume wheel.
Attach the hearing aid to a listening the stethoscope (if available). 
Seal the plastic tip of the stethoscope to the end of the earmold or end of the hearing aid. Turn the volume control wheel up and down slowly while talking, listening for scratchiness, dead spots, or distorted sound.
Visually check the aid in the ear. 
Check that the hearing aid/earmold is properly inserted and well fitting. See that the volume control is properly set and that the on/off switch is in the “M”/on position. Double check with the user if the aids are working appropriately. (Ask if they’re balanced, cover your mouth and ask them a question to test, etc.)
If the hearing aid does not seem to be working appropriately, refer to the “Hearing Aid Troubleshooting Guide.”