Has anyone used this product or something similar? If so, what are your thoughts on it? I am a little concerned with keeping it clean. You do use salt in it which I would think would keep bacteria at bay but you cannot get in to clean it thoroughly. I would empty and replace water and salt daily but just wondered if that would be enough to keep it clean enough for CF lungs?

http://www.salinetherapy.com/html/ultrasonic_salinizer.html