@bamaqueen
It gets a bit complicated since Pari has a Sinustar 2 and the older model Sinustar. The nose piece is different in each one. The older model send the mist up both nostrils while the newer system sends it up one nostril at a time. So far it does nothing for my large amounts of purulent mucus that seems to be mostly coming from my throat area. But I suppose that could be bubbling up from the upper respiratory system?