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.
Although rechargeable hearing aids are growing in popularity, the vast majority of hearing aids today are still powered by traditional hearing aid batteries. These batteries can be divided in to 4 different âsize groupsâ, ranging from smallest to largest: Size 10, 312, 13, and 675.