After learning about Push-In queen introduction cages at the WAS-93 conference at Simon Frasier, I've never had a rejection. I suppose this cage may be too much hassle for a large commercial operation, but I suspect the increased acceptance rate makes it worthwhile even for many of these folks. I think the fact that the queen gets to start laying, producing laying-queen pheromone instead of caged-queen pheromone, makes a big difference. A tip from a sideliner in our local club: do queen transfers in the cab of your pickup (or other confined area) in case she gets loose and decides to try her wings. [log in to unmask]