Thanks very much! I know someone who just did the Argentyn 23 spray a few times a day for several weeks and it didn't clear the infection when she retested. I suspect it's because the infection is so deep inside the jaw and sinus cavities it couldn't reach. I am going to try it with the nebulizer. Do you think if I keep going for 3-4 weeks it will be okay. Just don't want to spend money on the retest until it's all cleared up.