Crank up the fresh-tensity of your car’s air and fight stinks with Febreze Auto Vent Clip Unstopables Fresh—filling your vehicle with airy undertones and crisp, vibrant layers that last up to 40 days. Go ahead, just try and stop sniffing… we dare ya. * Stay fresh with up to 40 days of consistent scent with Febreze AUTO (on low) car air freshener * Easy to install: Click to activate, clip into vent, adjust scent level, and sniff on with this Febreze car air freshener * This Febreze car air freshener vent clip enhances every ride with a freshness that fights car odors... keeping your carpool smelling car cool * Febreze delivers even scent throughout your car with patented Steady Release Technology