AARP Hearing Center
While i usually enjoy most of the articles in AARP, "One Day Home Fixes" was a little disingenuous and could actually be dangerous for some people if they took the advice.
Jonathan and Drew may be experts in their line of work but to make suggestions based on their parents' situation and apply it to the general population is unwise at best.
They would have been better off consulting with a Certified Aging in Place ( CAPS ) specialist, or an Occupational Therapist experienced in home modification.