Fierce - Fresh Citrus , Warm Musk Just like The A+F Fierce Cologne Discover a burst of freshness during your everyday drive with our handcrafted Car Fresheners'! They Last a Long Time ( Approximately 1-3 Months ) and they are Reusable 1. Unscrew Wooden Cap and Remove Plastic Stopper 2. Replace Wooden Cap and Tighten 3. Turn Freshener Upside Down for 3-5 Seconds until wooden cap is Saturated with Oil 4. Turn Bottle Back Upright and Hang on your Rearview Mirror 5. Clean up any spills immediately to avoid any damage