A thorough explanation of known details about honey bee colony preferences whilst swarming is
here. Detailed description of the known requirements for selecting a new nest site are described in that pdf by Dr. Tom Seeley, et. al. of Cornell University. HTH
P.S. I have used both LGO and Swarm Commander to lure swarms. They both work...Swarm Commander is too expensive, but it works better by a considerable margin in my neighborhood. HTH
