From Armor All's Essential Blends line, this hanging diffuser air freshener removes bad odors from cars. It hangs freely in car interiors just a like a standard paper card air freshener. It also contains a scented oil pod that lasts up to 30 days, similar to a vent clip. A great benefit of the hanging diffuser is its steady fragrance level. The pleasant scent lasts for up to 30 days. It removes odors caused by pets, food, and smoke.