How long does one brick last?

A 200G brick will release scent steadily for weeks depending on cabin size and ventilation. Placement near air vents speeds up the process; keeping it in a corner extends longevity.

Where should I position the brick in my car?

Mount it where air flow hits it naturally—cup holder, dashboard vent, or door panel pocket all work. Avoid direct sunlight exposure, which can accelerate fragrance release unevenly.

Will this stain upholstery if it sweats in the heat?

Solid brick format won't leak or drip like liquid fresheners. No moisture concerns—just place it where it won't roll around during hard cornering.