This is the best mouth wash out there. I love the options of flavors that you can get, and they all work the same. Also, they are approved by the Canadian Dental Association, so you know it's good! Listerine fights bacteria and helps prevent bad breath. If I had to rank each one, it would go like this:

1. Listerine Advanced (The one that helps whiten teeth)
2. Cool Mint (possibly the best tasting one)
3. Fresh Burst (nice and minty)
4. Vanilla Mint (less intense and still tastes great)
5. Natural Citrus (for something a little different, but still works the same)
6. Original ( I don't think anyone really likes this one)

Listerine can seem expensive, depending where you go, but it works well and tastes great. I like that it comes in different sizes as well, so you can take them with you when you travel.