The Flip-Turn Sinus Flush (by friggy) removes infected mucus from
every part of your sinuses, which Mayo Clinic research shows is the cure for sinusitis, rather than treating sinus tissue with antibiotics. Regular saline irrigation does not work in the upper sinuses, because of gravity, but the Sinus Flush defeats gravity. It is effective with bacterial and viral infections, and some but not all fungal infections.
The Flip-Turn is the original, and still the best Sinus Flush.