An entrance excluder is a barrier placed at the hive entrance that allows worker bees to pass through but blocks the larger queen (and sometimes drones), helping keep the queen out of certain areas like honey supers or nuc boxes.
An entrance excluder is a barrier placed at the hive entrance that allows worker bees to pass through but blocks the larger queen (and sometimes drones), helping keep the queen out of certain areas like honey supers or nuc boxes.