Ian - I have been using a similar mixture of CS and xylitol for a few years. I irrigate my sinus cavity with this once or twice a week... I haven't had a cold in three years now. Xylitol coats the cells with a protective barrier so bacteria and virus can't break into the cells and get washed out with mucous. Irrigating with silver and xylitol works great. In a pinch, I just put half a dropper full of 10ppm EIS in each nostril lying on my back and let that sit for a few minutes also.
Bob
