Since my parasite scattering (because I didn't do an adequate Bowel Cleanse before doing major herbal bombardment for parasite killing) I have had many different ones appear in my sinus (never had sinus problems in my life before the scattering). I do twice daily hydrogen peroxide washes (as stated above) and also use a netipot or nasal cleansing bulb to squirt variety of diluted para meds or grapefruit seed extract, etc. into the sinus to kill them. Get your ears too. I also go to the chiro for magnetic pulse therapy (I don't own a zapper but this does powerful zaps for me). Health food stores carry nasal sprays that have the grapefruit seed extract. My ND suggested colodial silver nasal spray but I'm having a hard time finding this locally, I guess I will try to find on the internet today.
I am 95% better, it's taken 6 months. Be consistent - it's the most powerful tool we have. Don't get depressed or lazy, you have to keep at it to find success. Work on your immunity and general health so your body can do the fighting too.