I just use generic saline solution.At first sign of nasal discomfort.You know the one that starts the sinus infection that starts the fluid flowing into your lungs that in return usually turns to bronchitis and if left untreated long enough can turn to pnemonia.I turn the bottle upside down and squirt the solution in rather than the mist.Tastes nasty but has worked for me, going on at least a year without a sinus infection.I used to get at least 3 or 4 a year.
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