On Halloween, make sure that each of your kids has a water bottle when trick-or-treating. As you know, they will try to eat as much candy as possible during those hours, especially when unattended. But the more candy you eat, the more your body demands water.
More than likely, you remember how it feels to crave a cool glass of milk after munching a crumbly cookie. Well, that is your body telling you how to buffer those acids. If your kids drink water and wash down the acids after they eat candy, the incidence of decay will decrease. Keep in mind to still brush your teeth after eating candy, but washing the candy down with water is another tip to add as well.