I started using a neti pot about a year ago and it really decreased my allergies! I've even used it for my kids when they get colds and they don't seem to mind it too much.
I feel the Neti pot has really reduced the allergy meds and cold meds we take! I especially don't like giving these to the kids.
If we are having allergy or cold problems, we use it twice a day, otherwise once a day.