Travel with your favorite scents. The Waterfall Car Scent Vent Clip is a convenient car scent diffuser that fills your car with refreshing fragrances. The Waterfall is ideal for aromatherapy on the go. Every Car Scent Vent Clip comes with 2-natural scents sticks in Serene Blue and Cedar Forest. The sticks each last up to 30 days. Serene Blue Gentle and Supportive. Turn your car into a tranquil oasis with this warm and calming scent. Cedar Forest Revitalizing and Restorative. Clear your mind while fighting stress with our comforting woody floral blend.