I don't know what those sites say about the water you use, but the written
instructions my doc gave me was one full teaspoon of sea salt and one half
teaspoon of soda in a pint of warm water. I wouldn't buy the saline
solution packets myself because I'm sure it's nothing different than what I mix
up. I find that if the water is even a little too warm, it is
uncomfortable. Yeah, at first I was afraid of water in my nose, but at
body temperature and with the salt and soda it's not near what I expected.