Put some of the topical, or just h2o2, in your ears and let it drip through your inner ear into your throat. That should get them I don't think swallowing iver will hit it at the right angle.With the throat, also comes pain in inner ears.
I had them go in my ears and end up in my throat... no nests, just that itchy, gritty feeling. So I put grapefruit seed extract or h2o2 in my ears and just laid with my head to the side and let it drip down. It worked.
You're not wasting money, you're destroying the enemy.
Can you get Eprinex in Spain?