Trick-or-treating or Guising, is a customary practice for children on Halloween in many countries. Children in costumes travel from house to house in order to ask for treats such as candy (or, in some cultures, money) with the question "Trick or treat?". The "trick" is a (usually idle) threat to perform mischief on the homeowners or their property if no treat is given.
In North America, trick or treating has been a customary Halloween tradition since the early 1950s. Homeowners wishing to participate in it sometimes decorate their private entrances with artificial spider webs, plastic skeletons and jack-o-lanterns. Some rather reluctant homeowners would simply leave the candy in bowls on the porch, others might be more participative and would even ask an effort from the children in order to provide them with candy. In the more recent years, however, the practice has spread to almost any house within a neighborhood being visited by children, including senior residences and condominiums..