I only got my CT in July, so I never had a chance to use the headlight washers in cold weather to see how they worked. In addition to clearing away ice the washers would be handy for cleaning dirt and mud off the lights during spring breakup. I always carried windshield washer and paper towels with me during that time of year. My car is being shipped from Anchorage to Phoenix, so I won't get to put those deicers to work.