My husband uses a different version, a plastic squirt bottle and I don't think it is as good but he seems to like it.
Interesting. I've never tried that many "shots/day". Thanks, and I'll pass it on to the wife, and if, as, and when I have my next sinus infection, I'll give it a shot.
I'll swap you your sinus infection hint for a virus hint. Something that I have found to work is, when the very first inklings of a virus show up (itchy nose, sneezing, whatever), climb into your bed or recliner with a heating pad and as many blankets as you can stand, and "roast yourself" for as long as you can take it. Two times out of three, this kills the virus before the body's immune system gets cranked up enough for you to start running fever.
The Native Americans (and the Scandahoovians) were right with the "sweat lodges" and saunas.