@lampstone My dr has me do albuterol 2x day then followed by 7% saline 2x day. There is scientific proof that 7% saline kills mac. 3% not strong enough. If you think about it, we were all raised to gargle with warm salt water when we had a sore throat. Remember? That is because the salt kills back the bacteria. First of all, the saline treatments clean out your lungs and can cause a productive cough to clear the mucous out. Second way it works id that it creates a salty environment that discourages bacterial growth. May want to revisit that dose with your dr. There is a saline chart posted on the Discussion Board on the main group page that shows what percentage of saline will kill certain bacterias. The only time drs do not like to use 7% saline is if your lungs are in very fragile shape.