Apple cider vinegar is an effective home remedy to treat yeast infections in dogs. The acidity of this particular vinegar, as well as the healing aspects, will help to kill some of the fungi. That being said, it’s best to do this after using a medicated shampoo as vinegar may not sufficiently kill all of the spores.
Simply mix one part apple cider vinegar to one part water and spray it onto your dog’s coat after a bath. Remember to avoid irritated spots where your dog may have scratched already as the solution in an open wound will hurt them.