Families often have a hard time believing that there is any impact when a person has hearing loss in only one ear. Listening is believing! One strategy presented in The Developing Child with Unilateral Hearing Loss asks the parents to listen with an earplug in one ear. Having earplugs on hand also helps to effectively demonstrate the effects of bilateral mild hearing loss on listening! Although available at many drug, sporting goods and large department stores, Supporting Success provides earplugs for sale for the convenience of busy professionals! 15 PAIR. Each pair wrapped separately. Noise reduction rating of 33 dB.