Sasha i do use the saline sprays and it does help some but doxycycline is the thing thatreally helps me and it works well but it would be good to not have to rely on antibiotics.
The thing I'm using is a nasal rinse rather than a spray. I use the Neilmed bottle that you shove up one nostril and the water goes up into the sinus cavity and comes out the other nostril (lovely! party trick!) so presumably gives it a pretty good clean.