The first swarm is usually the biggest and the one that I don't like losing so I swarm for them. Yes, you need to find the queen, but take the frame that she is on and three frames of bees and capped brood and put them in a nuc. Shake a few more frames of bees in with them. The foragers will go home. This is easier than getting them out of a 30 foot tree.
Sometimes that will shock them into not swarming again, but not always. You can always combine them back later in the season if you don't want more hives.
Sometimes that will shock them into not swarming again, but not always. You can always combine them back later in the season if you don't want more hives.