I've put Colloidal Silver , peroxide, vinegar and oil in my ears with a q-tip.
Nothing beat oil--any kind will do. It smothers whatever is there.
Also, if you have parasites in your mouth, oil works there, too. Some call it "oil pulling" and there's a forum for this. But all there is to it is to put about 1 tablespoon (I use olive) in your mouth and swish around gently for about 10 minutes, then spit out into toilet.
You may not see any result because of the size of the parasite, but I believe you will notice an improvement in just a few days.