Refresh Your Car! Vent Air Freshener (Mixed Berries Scent 4 Pack) Use your car’s climate control system to dispense long-lasting fragrance with this scented vent stick from Refresh Your Car! Simply attach a vent stick to any vent in your vehicle—the fragrance fills your cabin automatically when the climate control system is turned on. Refresh Your Car! auto air-fresheners are an affordable and easy-to-use solution for freshening up the atmosphere of your car truck or van.