Epic Xylitol Gum

Super-strong Spearmint and Peppermint Epic don't fade fast, so one piece will last you a while. These and the other two flavors, Cinnamon and Fresh Fruit, taste less sweet than some other brands in the bunch – which makes it feel as though they're really working. Epic comes in a 50-count bottle or a 12-piece to-go pack. [$4.99 for 50 pieces; epicdental.com]