Try one of our new long lasting scented car diffusers. These diffusers are a great addition to any car decor. The scent does not fade away. Like a reed diffuser used in your home, these mini bottles come with 2 reed sticks that obsorb the fragrance oil and disperses it into the air. Each bottle could last 2 to 3 months depending on the use of the AC or heater, as these chic little bottles attach directly to your vents.