I'm no expert, but these are my thoughts: External use means it's not to be ingested, so it is fine to go in the ears. I have only used homemade garlic oil, but I used about 3-4 drops in each ear. I would wait a few minutes after putting it in the ear before flipping over just to make sure it gets in there. My understanding is that the warm oil is supposed to help the pain, and that garlic is a natural antibiotic. If you haven't done it already, try sleeping propped up on pillows to relieve the pressure on your ears.