Anti-escape Beehive Cone Entrance is used normally fit onto your Bee Hive or nucleus box rooves for essential ventilation with a bee escape hole. The original use of these cones was to allow the easy exit of bees from the space between the inner and outer boxes of beehives. To enable this the hole at the top of the cone is 7 mm in diameter. In recent years they have been used in the lid of a honey jar for wasp trapping (put a little jam and water into the jar).