YES...I do...
I tried it about three years ago and it really helped, but over time I got out of doing it. Since them, every 6 months, I get a aweful sinus infection, like clockwork. I just did 6 days of antiobiotics and I still don't feel all that great. A friend mentioned it to me and I thought, wow, its been years since I used it. So, I am planning to use it every day to see if in 6 months I am free of my upcoming sinus infection (which usually results in me having to take 3 days off work ext).
I can tell it really "cleans" and opens me up, the first hour is drastic difference, but still afterwards I can tell there is a big difference since I have been using it daily.
I will be picking up some distilled water now, though!