I had thought about that before. Making a queen trap using a queen pheromoneand maybe a small queen excluder on the exit so the worker bees that are alsoattracted are able to get out of the trap. Instead of looking for the queen ina hive you put the trap in for a few hours and come back.
Are queens attracted to queen pheromone?If that is the case, I think the bigger gain would be to use this method to lure queens out of swarms that have taken up residence in walls of buildings.Seems too good to be true.