Natural Dog Ear Cleaner Diy . You can also use a combination of olive, almond, and mineral oils as a natural dog ear cleaner. Here is how to do it. How to Make Homemade Dog Ear Cleaner 6 Natural and Simple Recipes from topdogtips.com Oil of oregano is a natural antibiotic. Your dog’s outer ear may not be long. Place a few drops on the inside of the pinna and then a few drops into the ear canal.