Thanks for the suggestion. I ordered the two-ingredient chlorine dioxide you mix and then, as I understand, add a drop or two to your nasal rinse. This product was about one-quarter the price of the brand-name Snoot. Can't wait to see if it works on my pseudomonas! My references included: https://mastermineralsolutions.com/uncategorized/how-to-use-chlorine-dioxide-for-ears-nose-and-eyes and an application for product patent: https://patents.google.com/patent/EP2525802A2/en