If you observe a shift in sound quality or a decline in your hearing, it could be an indication that it's time to replace your wax guards. Generally, these guards should be replaced at least once a month.

Here's how to replace them:

1. Remove the dome from the receiver.

2. Insert the empty end of the application stick into the used wax guard in the hearing device.

3. Pull outward on the stick to remove the used wax guard.

4. Use the opposite end of the stick to securely insert a clean wax guard into the hearing device.

5. Pull outward to remove the stick and discard it.