Febreze 車用空氣清新劑，出風口夾式除臭劑，Gain 原味，8 入

The clip stays put even on bumpy roads, and the Gain scent really cuts through the lingering fast-food smell. One vent clip lasts me about two weeks before fading.

You know that lingering fast-food smell that won't go away? This clip actually obliterates it, and the Gain scent is strong enough to last a full week without being overpowering.

I popped one of these vent clips in before a long road trip and the Gain scent lasted the whole week. It does a solid job cutting through stale air and old coffee smells, and the clip stays put without rattling.