How long does one can last?

Duration depends on how often you spray and your vehicle's ventilation. One 1.5 oz can provides multiple applications — use it as needed to maintain scent between car washes.

Will this leave residue on my dashboard or vents?

Aerosol cans spray cleanly without sticky buildup when used as directed. Spray in open air within the cabin rather than directly onto interior surfaces.

Can I use this with my climate control running?

Yes. Spray with your fan on low or off, then turn climate control to your preference. The scent circulates naturally through your HVAC system.