@lmh7 Hi there. From what I understand, the use of an Aerobika is to help bring up the gunk in your lungs. I thought it was used by patients that are very congested and have a difficult time bringing it up. I am sure that all people have some amount of mucous in their lungs and it gets worked upward and out. Because those of us with lung disease usually have lung structure issues like scarring or bonchiectasis; mucous can get trapped in our lungs. Sometimes it isn't obvious to us that phlegm is being trapped because it is a small amount and doesn't cause a cough. It can still become a breeding ground for mac and pseudomonas. I find that doing the inhaled saline (sodium chloride) really helps to keep my airways cleared. It works on several levels: 1) it thins the mucous by adding moisture to it; that it turn, makes it easier to bring it up 2) it is slightly irritating so it can cause you to cough up the loosened phlegm 3) the salt is a natural antibacterial that hinders the growth of colonies. You may want to consider using the inhaled saline if you aren't already. I am hoping that others will jump in with their experience with the Aerobika to help you decide. Please let me know what you do and how it works for you. BTW, NJH is ONE of the top centers for treating MAC. Mayo Clinic is the other. : )