Useless Big Pharma Rx Dealer, I mean ”doctor” had me try 2 different kinds of chemical dope for “hay fever ", what quackery. Warm salt water solves the issue for me., sorry Big Pharma Dope Dealers.
I use “Simply Saline” which is in a small spray can. It has a little bit of pressure and gets far back into your sinus cavity.
I’ve had one of the power irrigators for doing that for more than 10 years. Use it with saline packs and distilled water. Love it. Really clears out the sinuses.
Also try a daily Q-tip swab soaked with hydrogen peroxide...swish the swab around the nasal opening to whatever depth you can easily tolerate.
Also gargle with hydrogen peroxide after brushing your teeth.