It seems the real risk to children on Halloween isn’t candy being tampered with (i.e. pins, razor blades) to harm unsuspecting children. Though in recent years the practice has significantly diminished, for years parents have rushed their kid’s holiday candy earnings to get x-rayed to make sure it’s safe. But in reality not only are such instances extremely rare but also the x-rays cannot pick up other foreign objects such as harmful liquid that could be injected inside, DelawareOnline The News Journal reports. According to the Safe Kids Delaware, Halloween is not a more dangerous day because of tampered with candy, but rather because children or four times more likely to be hit by oncoming cars.
The FDA has a web page devoted to Halloween safety tips: http://www.fda.gov/oc/opacom/kids/treats.html