The Escape Screen works exactly like a “bee escape” but faster and easier. This is the best escape by far!! The bees will leave the supers through the triangles and they can’t get back in. Best to leave on overnight. If there is brood in the supers the bees will not leave it. Be sure there is no way bees can get into the supers from outside or robbing will occur. Ships via FedEx Ground or FedEx Ground/Home Delivery or Freight (on large orders) within contiguous U.S. states (lower 48 states). Buyer pays shipping to other locations so contact us for details. There is a discount for bulk orders so contact us. ************************************************************************************************************************************************WE ONLY SHIP MONDAY THROUGH THURSDAY, ORDERS PLACED FRIDAY THROUGH SUNDAY WILL SHIP FOLLOWING MONDAY.WE ONLY SHIP TO THE LOWER 48 STATESWe DO NOT ship to Hawaii, Alaska, Puerto Rico. Lower 48 only