Most sino-nasal irrigation systems currently in use require passive drainage after flushing... typically into a sink. You squirt the saltwater into one nostril and the flush drains out the other side passively. However, there is a new system called " Navage " made by RhinoSystems that adds suction along with the flush. The upper chamber is where clean water is held. There are two nasal pillows that goes into each nostril. By pushing a button, the water gets mixed with salt and fl…