Enhance your romantic encounters and keep your car smelling fresh with Cream Buster-Cologne Pheromone Infused Air Freshener. How to Use: Remove Vent Stick from package. lnsert plastic clip into hole on back of vent Stick Position clip orientation to horizontal or vertical alignment to fit vent as desired. Keep unused Vent Sticks in package until needed. Avoid placing air freshener on vinyl, carpet leather or varnished surfaces