So, if ear mites are not that common in dogs, what do I see? Most issues involve fungal (malassezia) or bacterial. A swab is commonly done to differentiate via microscopic exam, allowing us to choose the right medicine. The number one underlying cause of repeat otitis (assuming the initial treatment worked) is allergies. As your pet ages, tumors can also be a problem, but in many cases, the initiating agent is long gone and I treat what I see.
What can you try at home? Cleanser are a good option. Avoid peroxide and alcohol in the canal, as if not done properly, it will make matters worse. The only home solution I can recommend is half and half white vinegar and water. Try flushing the canals once a day for several days, if not improving, see a veterinarian.
Do not stick any swab down the canal. You could just pack in the infection more.
