Warwick Township adheres to the Lancaster Inter-Municipal Committee Halloween Policy that was enacted in March 1992 that states "Trick or Treat activities will occur from 6:00 p.m. to 8:00 p.m. on Halloween, October 31, of each year, unless October 31 falls on a Saturday or Sunday, in which case Trick or Treat Night activities should occur from 6:00 p.m. to 8:00 p.m. on the Friday prior to October 31".