I am a patient of a San Francisco Audiology, I found numerous ads to be dangerously misleading when those that wrote the ads knows nothing hearing loss and hearing aid. And not all hearing loss can be treated with an ear spray. And not all elderly people have hearing loss since hearing loss also affect young people as well. As a 59!year old, I’ve been living with moderate hearing loss all my life since as an infant. Only Audiologist are allowed to recommend specific hearing aids to their patients as the result of a hearing test. Those who stand behind those ads are only interested in trying to make profits due to their theory by using misinformation, to promote their unproven claims of hearing loss that can be treated without the use of hearing aids when they are only being misinformed.