Refresh Your Car! Mini Diffuser Air Freshener (Hawaiian Sunrise Scent 2 Pack) Refresh Your Car! Mini Diffuser uses your car’s climate control system to reduce odors and deliver a refreshing fragrance in your vehicle. Designed to last up to 45 days* this car scent diffuser gives you long-lasting fragrance for every journey. Simply attach this mini diffuser to any vent in your car truck or SUV for discreet air freshening. When the climate control system is on this mini diffuser automatically fills the cabin of your vehicle with a pleasant fragrance. Refresh Your Car! auto air fresheners deliver refreshing long-lasting fragrance to make your car feel like home. *on low and under ambient conditions