Like taking candy from a baby.
I mean, why else would one go knocking up on the doors when all you have to do is wait in the darkest corner for an innocent child to come along, bag of candy in tow. Do them a service, and take the sugary goodness off their hands.
Just make sure to run like mad when their high pitched screaming echoes down the neighborhood. Without letting a single piece of candy roll out. For that would be a real shame.
Beware, Igork and Rasfburry are in town now xP