The baby at home has lived for a long time (especially after taking a bath), and the ears are prone to dirt. After adults find out, most of them want to remove it. The problem arises: basically the children are active, and they don’t pay attention during the cleaning process. It will damage the eardrum, so it is only recommended to use a special cotton swab to moisten it with water (wet it) and treat the external one slightly while it is asleep. It is not recommended to treat the internal one.