Ear wax guard is designed to keep ear wax, dust, grease and moisture away from blocking the hearing aids. It needs to be replaced from every week to every month, depends on the ear canal condition. Different people have different ear canal conditions. The filter should be replaced BEFORE it is full of ear wax or dust. Or the speaker of the hearing ..

Ear wax guard is designed to keep ear wax, dust, grease and moisture away from blocking the hearing aids. It needs to be replaced from every week to every month, depends on the ear canal condition. Different people have different ear canal conditions. The filter should be replaced BEFORE it is full of ear wax or dust. Or the speaker of the hearing ..

Ear wax guard is designed to keep ear wax, dust, grease and moisture away from blocking the hearing aids. It needs to be replaced from every week to every month, depends on the ear canal condition. Different people have different ear canal conditions. The filter should be replaced BEFORE it is full of ear wax or dust. Or the speaker of the hearing ..