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.
There are several styles of hearing aids available, from the smallest - Invisible in the Canal (IIC) to the largest and strongest - Power Behind the Ear (BTE), and the very popular Receiver in the Canal (RIC) - made to fit most hearing losses while remaining nearly unseen.
Today's hearing aids are smaller and more sophisticated than they used to be. There are dozens of styles from which to choose, from behind-the-ear (BTE) models to instruments about the size of a pearl, called completely-in-the-canal (CIC) hearing aids. A CIC instrument hides within your ear canal, totally out of sight. Your perfect style depends on your lifestyle, listening preferences, and more.