3% Hydrogen Peroxide is the best thing to clear up ear infections, swimmers ear, kills bacteria, and over all cleaning out the ears, ect. I remember my grandma using it on me as a kid. It cleared up a lingering ear infection. Doc wanted to put tubes in. Never had another ear infection. I use on my girls and they never have had ear infections.
Ear Infection: Apply a drop each of Lavender and Melaleuca at any (or all) of the three points in the picture (behind, on, or in front of ear). Rub in and your done. This takes one treatment, unless it is a monster ear infection - like an antibiotic resistant one. If it is that bad, apply every 3-4 hours for a day and it should be finished.