Good info Terri. I've had Pseudomonas off and on for 3 years. I like your thinking about how to approach the treatment. I've never been told about doing treatment in steps as you prescribed. Makes sense. Will give that a try. It is frustrating that it never seems to "kick" Pseudo to the curb forever. I made it almost a year this last time before my symptoms occurred again. At the moment my last sputum 2 months ago showed abundant Pseudomonas A. but he does not treat unless I'm symptomatic. He has indicated that if I need inhaled antibiotics (Tobramycin) he does 2 weeks on and 2 weeks off. My previous pulmonary doc did 28 days--one and done. He did not say to do the 7% while on Toby. Also no vest usage when on Toby. Thankfully I'm feeling fine--just staying with airway clearance (7%) twice daily. Things could be a lot worse. Blessings to all.