Will this clip damage my air vents?

No. The clip is designed to grip vent slats without pinching or cracking plastic. It's a friction fit — just snap it on and off as needed.

How long does the scent last?

Fragrance life depends on how often you run your climate control and cabin ventilation. Higher airflow depletes it faster. Most drivers replace theirs every 3–4 weeks of regular use.

Does this work with recirculated air?

Yes, but effectiveness is best when your system draws fresh outside air through the vents. On recirculate mode, the scent will still disperse, just more slowly.