Selectively expandable apparatus for insertion into an ear canal, and related methods of use and operation. In one embodiment, the apparatus includes a selectively expandable body configured for insertion into an ear and expansion within the ear canal. In one variant, the expanded main body is removable from the ear canal via a removal mechanism and removes excess cerumen and/or debris from the ear canal during removal. In another variant, the main body includes one or more compounds and is configured to receive a fluid for diffusion of the one or more compounds into the ear canal.