Installed a package of bees including the queen 2 days ago. Queen was caged and left for the bees to release. Today, when I fed the bees and checked on the queen, the queen was not in the cage but there were lots of bees surrounding and inside the cage. Could this mean that the queen is gone and the bees are still smelling her and think she is still there? Another question, would the empty queen cages be good to place in swarm traps as an attractant?