My doc told me if you try everything and nothing comes out, that usually means there is not enough there to come out. The trick is to not give up - at times, there may be a small amount.

For several days this week, I had no mucus come out, typically when healthy I see maybe a half teaspoon to teaspoon. Suddenly this morning, after my inhaler but before any clearance efforts, I started coughing, and brought up a lot (for me when healthy - more than an ounce of very thick, clear mucus.) It reminded me that with my house disrupted by remodeling, I was lax on my 7% saline nebs. I felt all cleared out after the coughing, and had no urge to cough after 90 minutes of dancing this afternoon, so I'll restart 7% saline tomorrow.
Sue

Absolutely!!! Is flossing your teeth still flossing if you don’t remove anything from between your teeth?:)

I’ve only gotten mucus from my lungs one day out of the 10 months I’ve done airway clearance and it was during an active sinus infection. The docs let me cut back from 2x/day to 1x. I continue the daily clearance since prevention of infections is the key to staying healthy. My bronchiectasis is mild.