Ears are another area which should be checked frequently, watching for dirt and excess wax. If needed, place recommended amount of ear cleaner into car and massage the base of the ear. Wipe out dirt and excess cleaner with tissues or cotton balls. Letting your dog shake his head at this time can help bring up debris from the bottom of the ear canal. Wipe if needed to remove dirt. A proper ear cleaner may be used as frequently as once a week if needed.