The problem with sinus infections is they often don't go away with only 1 treatment.
I use a little teapot instead of an official "netti" pot. It's not scarey, doesn't hurt at all. I make up a mix of 1 cup water, 1/2 tsp salt, 1/2 tsp baby shampoo. I keep what I am not using immediately in a little cream pitcher, wash the pot after each use - to keep from recontaminating my nose.
I'm on diflucan in case the infection is mold or yeast. It seemed to help for a while.
I'm using a home brew of bactroban melted in water and put back into a spray bottle without the wax, which sticks to the sides of the glass cup I use to melt it in.
Since other antibacterials haven't made the infection go away completely, I'm on clindamycin in case the bug is an anerobe.
I tried an allergy nose spray, but all I got from that was side effects. I take allergy shots weekly for my allergies and have no trouble with them.
I wish I could get my sinuses cleared, but this all started with a car accident that broke my nose. I'm hoping not to have a sinus opening widened.