Unfold or click the clip to activate it, then attach it to a car vent. Use the adjustable scent/nozzle or fragrance setting on the clip to set the intensity. Run the car fan—the vent airflow circulates the scent.
These vent clips are oil-form air fresheners (listed as Product Form: Oil). They are non-powered, disposable units and do not use batteries.
Listings note the clips are phthalate-free and dye-free. Warnings advise keeping them out of reach of children and animals and avoiding contact with eyes.
Most listings are sold as 2-count packs. Net weights shown in listings are typically 0.13 fl oz (US) for several options and 0.14 fl oz (US) for others.
The clips are described as disposable. One product note also mentions a “Stay-Fresh Storage Case” for keeping extra clips fresh.