If your kids are young and you live in an area where they want to go door to door, always have an adult with them. It’s also better to travel with a few other kids and parents/guardians, safety in numbers. It’s silly to remark nowadays, but have your cellphone with you. Don’t go to houses you are unsure of and keep an eye out for dogs. Stay away from houses that look uninviting, no lights on, no one around. In this day and age we are optimistic that people are not going to be cruel, but checking the child’s candy before consumption is very important, in particular candy given from people you don’t know.