Thanks I am new to this site and had read posts from several years ago concerning this. I was curious as to why nothing has been said recently and curious/comcerned about those who had posted. I am not willing to use my son as a guinnnea pig, but am curious as to what others are doing. I would love to hear what you have found to be helpful. My son is currently on Pulm, Saline,TOBI, Bactrum and Cypro. Having a ton of trouble getting rid of PA. Thanks...