I had to use one after a sinus surgery (to remove a not-so-tiny bone spur and then put things back where they belong) to flush out dried blood and whatnot. I'v

I had to use one after a sinus surgery (to remove a not-so-tiny bone spur and then put things back where they belong) to flush out dried blood and whatnot. I've used it a few times after when I have a severe head cold to open things up a bit. Easier and less invasive than going through the background check needed to buy cold medicine.