"The hive that was struggling had their queen assassinated. Sentenced to death but being put in a small jar of alcohol for not performing. I read to keep dead queens in a jar of alcohol to use for swarm lures ( not sure if this works)"
It works real well. Dip a q-tip in the alcohol and wipe it around the entrance then do the same on the other end of the q-tip with Lemon Grass Oil, put the q-tip in a baggie, seal it up and place it in the trap.
Jim