Wet ear canals can predispose a dog to ear infections. When bathing your dog, keep water out of her ears by inserting cotton wadding into the ear canals. Similarly, it is important to dry your dog’s ears after she has been swimming. If water gets into an ear, wipe the opening gently with a cotton ball. If you know from prior visits to your veterinarian that your dog’s eardrums are intact, you can instill an ear solution that contains a drying agent. Commonly used drying solutions include ClearX, Panodry, and Vet Solutions Swimmers Ear Astringent. A drop of white vinegar will also help prevent “swimmer’s ear
Foreign material in the ears causes irritation and, later, infection. Grass seeds and awns frequently cling to the hair surrounding the ear openings and then drop into the canals. Because the ear canal has an L shape, foreign bodies can become lodged down in the canal and it can be difficult to thoroughly clean the ear without sedation. To avoid this, always groom under the ear flaps, especially after your dog has been running in tall grass, weeds, and brush.
It is common in professional grooming parlors to pluck hair out of the ear canals. Serum then oozes from the hair pores. The serum makes an excellent medium for bacterial growth. This may be one reason why ear infections are more common among Poodles, Schnauzers, and other breeds that are professionally groomed. It is recommended that you do not allow hair to be plucked from this area unless there is a medical reason to do so. In some cases, the hair forms a wad that obstructs air flow and keeps the ear canals moist; avoiding this would be a valid medical reason to remove the offending hair.