Meguiar's Air Refresher will remove any unwanted odors from your car by moving through the ventilation system across all areas in the vehicle and reaching even the most difficult to get places, leaving a fresh scent.Unlike traditional odor removers that simply fall down onto floor mats and seats, Meguiar's Air Refresher penetrates the complete interior of your car, truck or SUV eliminating unwanted odors. The odor eliminating mist moves through the ventilation system of your vehicle, across the headliner and in-between all other hard to reach areas, eliminating odors and leaving a fresh scent in its place. How-to use: Vehicle should be unoccupied with no person, pets or plants inside. For best results remove any sources of unwanted odor. Vacuum and clean any soiled carpet/upholstery. Park your vehicle in the shade and in a well ventilated area. Do not use more than one can, per vehicle, at a time. 1. Start the vehicle with the fat set on high (circulated cold air) and close all windows. 2. With the Air Re-Fresher nozzle facing away from you, activate its trigger. 3. Place it in the center of the car (typically the floor between the front and back seats). 4. Close all the doors for 15 mins. 5. Open all the doors after 15 mins, turn off vehicle let air out for 5-10 mins.