Although microscopic in size, ear mites are often a major problem for dogs and cats. They cause intense itching inside the canal, irritation and infection if not treated. Symptoms: Dogs with ear mites often scratch at their head and shake their heads to one side or the other. Your pet should be examined to determine if ear mites are present prior to treatment. Whenever treatment for this condition is not working well other causes should be considered. For this problem we recommend Happy Jack Mitex, an effective pesticide in handy self-applicator bottle. It contains Pyrethrins, an effective pesticidal for ear mites in dogs and cats.