Your dog's ears are prone to infections because of the accumulation of dirt and debris from outside and inside elements. Routine ear care is essential. In case your pet is suffering from infections like ear mites, you can treat the ears with mineral oil. Soak a cotton ball in mineral oil and gently swab your dog's ears with it. You can also try no more than two drops of the oil into the dog's ear, using an eye dropper then massage the ear gently. After the massage, clean the ears with a dry cotton ball. Remember never to go too deep as it may harm them and NEVER use a Q-Tip!