Ear Infections can be caused by many pathogens: bacteria, yeast, allergies, and mites. Keeping your pet’s ears cleaned is the best way to avoid future problems. It is recommended on a normal ear to clean no more often than once weekly as to avoid drying out the ear. Mites can cause very severe itching of the ear. Miticides will rid your pet of these mites. Remember to clean out your pet’s ear before applying as they can hide in the wax.