It's too bad that irrigation can't reach all the sinuses. I've had what I think is a sinus infection lately, extreme congestion and a bad taste in my mouth. Since I have problems with oral antibiotics, I've used ABX in nebulized form in the past. At least the ABX is confined to the sinus cavities although a tiny amount is supposed to get into your system. This is an expensive way to go. This time I'm trying Sunwarrior Silver Immune Shield Fulvic Complex + Gold in an oral form. I'm taking 1/2 tsp. in a little water every hour and will continue for 2 or 3 days. The bad taste is gone, and my nasal congestion has eased somewhat. It's more the normal congestion I have. Also, it helps some with my back and neck pain for some reason. The reason I thought of this is that someone at Whole Foods had recommended this product to ward off an upper respiratory infection. It worked great. It's an 8 oz bottle, so I had a lot left. It's inconvenient, but worth it to me. When I'm out, I'm taking solutions that I put in little vials. http://www.sunwarrior.com/product-info/immune-shield/ When I first saw my ENT years ago, she told me that it's very common for sinus infections to be caused by fungus. She suggested taking a stronger probiotic as well as OrthoMolecular Sinatrol to control the fungus. http://www.iherb.com/Ortho-Molecula...&disc=0&lc=en-US&w=sinatrol&rc=1&sr=null&ic=1 It seems to have worked for the fungus. I never cultured positive for it again. I still get the bacteria sometimes, though.