Is Poisoned Halloween Candy a Myth? Every year around Halloween, we hear the same concern: you gotta check the candy for poison because strangers put laxatives in Tootsie Rolls, Razor Blades in Apples and heroine in Snickers. But is this trick or treat dilemma an actual reality or just a clever way for your parents to steal your candy? The truth is out there (and by out there we mean in the episode that you should definitely watch).