do splits really help control swarming?
Like GWB's undies it Depends. Splitting can control swarming if done at the right time and in the right way. The split needs to be done prior to the 1st large honey flow. The old queen needs to be moved out of the original hive location in simulate having left with the swarm. A couple of empty frames should be placed on the outside of the brood chamber(s). Give the hive plenty of room to grow as soon as possible after the split, ie when the boxes are 80% full of bees and comb (bee covered frames)