This box is a fun and inexpensive way to perk up my car every month, my first freshener was the Fallout Boy which is great because I just started playing this month! I haven't put it in my car yet, but I look forward to having a new freshener every month and I expect it should last about that long. The only thing I would change about this box is that I wouldn't mind getting any of the categories, but I could only pick one. Maybe there could be a "Grab Bag" or "Surprise Me" option for geeks who like everything?