Last 45+ days. All you have to do is insert and clip it! Alcohol-free fragrance works to eliminate unpleasant odors. It's molded into non-hazardous, non-toxic plastic for long lasting performance.
This is a GREAT car air freshener. It last more than a month, I got the blue one because my favurite color is blue and the smell... It smells like a fresh clean car. It's design is so cute and I will keep it until I get another one