I've suffered from allergies my entire life. I've been on multiple steroid treatments and homeopathic remedies for years. When surgery was recommended I decided there had to be a better way.
I don't have a miracle cure, but I have something that is close: the Grossan Hydro Pulse Sinus Irrigation system.
If you've used a Neti Pot then you have the general idea, but the Hydro Pulse system is much more effective.
If you suffer from allergies, I highly recommend picking one of these up.