I have an asthmatic 3 year old.  I'm constantly researching ways to lessen triggers to her asthma because let's face it, there is no appetite for a coughing kid these days! When I read about the Sciaire products, I wanted to try it because we had just been on vacation at the beach & I noticed that she never coughs at the beach. I am not a scientist so I cannot tell you how it works, but I am an attentive mom that hasn't had to administer as many breathing treatments this month!  Happy I tried the Sciaire Mini. Packaging is top notch.  Make sure that you have the right phone to operate it! The directions are clear and easy.  I got the mini, and I am surprised how big it is.  My favorite feature is the Real time air quality indicator.