Diy Ear Infection Treatment For Dogs . Tea tree oil contains antibacterial properties and is a bane to the yeast inhabiting your dog’s ear. Diy ear mite treatments for dogs. 5 Homemade Dog Ear Cleaner Recipes from www.tipsbulletin.com Sure, the acid in vinegar might kill yeast, but vinegar is mostly water. Mix all three ingredients together until they are well combined. Apply just a smear of coconut oil on the outer bits of the ear which neutralizes the acidic action of the vinegar.