An owners should take his dog to a veterinarian for ear infection treatment, though he can clean external parts at home with veterinarian-approved cleaners, notes WebMD. An owner may also treat less serious yeast infections in the dog's ears with white vinegar and warm water, according to The Huffington Post.
If the ear infection resulted from allergies or swimming, the owner may be able to treat it by removing the allergens or washing the dog with hypoallergenic dog shampoo, notes The Huffington Post. An owner may decrease the likelihood of repeated infection by removing the hair around his dog's ear canal and keeping the canal exposed, particularly for floppy ears, according to Washington State University's College of Veterinary Medicine. An owners should not clean the dog's ears too often, because it might increase irritation.