Teach your kids how to eat their Halloween candy in moderate amounts. Start by sitting down and talking to your kids about how much candy is reasonable for a day and when during the day they would like to have the candy. Agreeing on set parameters beforehand is important in helping your children feel like a part of the decision. When they get home from trick-or-treating, ask them to separate the treats into two piles: favorites and not-so-favorites. Allow them to enjoy some from each pile, according to the agreed upon plan.