How long does a 400G Fresh Box last?

Longevity depends on cabin size, ventilation, and temperature. Larger format means significantly longer duration than standard 50G units — expect weeks to months of noticeable scent. Lifespan shortens in hot climates or vehicles with heavy air cycling.

Can I use this in direct sunlight on the dashboard?

Not recommended. Direct sun accelerates scent release and can warp the solid construction. Place it under a seat, in a cup holder, or in a door pocket where it stays shaded and stable during driving.

Will this damage upholstery or plastic trim?

Solid construction won't leak or stain like liquid fresheners. Keep it away from fabric surfaces where friction could cause minor dust transfer, but placement in cup holders or under seats presents no real contact risk.