Will this fit standard interior vent clips?

The jar is designed for vent clip mounting. Test-fit before committing — vent clip width varies slightly by vehicle design.

How long does the scent last before I need a refill?

At 110g, you'll get weeks of consistent fragrance in typical daily driving. Duration depends on cabin ventilation, temperature, and how often you run the AC.

Can I refill this glass jar or is it single-use?

This is a complete jar unit. Refill options aren't specified — treat it as a full replacement when fragrance fades.