MSMA (monosodium methanearsonate) is an arsenic-based grass killer. It kills grassy weeds such as crabgrass and goosegrass without harming most turfgrasses. It contains organic arsenic that, according to the University of Tennessee Extension, is less harmful than aspirin.
While open-fit hearing aids are the most popular choice of hearing aids and certainly offer many benefits, they are not for everyone. The best practice before selecting a hearing aid is to have a hearing test done by a qualified hearing healthcare provider. The best style of hearing aid for an individual depends on hearing test results, dexterity, vision, communication needs, lifestyle and what they can afford.
Tuning in to Hearing-Aid Types. Digital hearing aids come in five major types and are categorized by where on or in the ear they're worn. In the fall of 2015 we asked more than 131,000 subscribers about their experiences with hearing loss and hearings aids. More than 20,000 aids were rated.