Cleaning the speaker unit and shell
As a general rule, clean your hearing aids each day with a soft, dry cloth. Make sure your hands are clean and dry before handling your aids.
Do not use water, cleaning fluids, solvents or alcohol, as these could damage your hearing aids.
The speaker unit in receiver-in-the ear hearing aids (RITE models) should be cleaned on a regular basis using a cloth to rub off any earwax. The domes (silicone tips) that cover the speaker units should not be cleaned, but instead replaced at least once a month.
Watch this video on how to clean the shell: