Demaree not for swarm control, but to turn your hive into a Monster
You have Mr. George Demaree back in the 1800's thinking how in the world can I stop a swarm without all the fallout.
Well now that modern bee keepers have gotten a hold of it, we started tweeking things a smidge little bit.
I think you'll like this and I hope it helps your bee keeping.
link to non narrated animated directions for Demaree
https://youtu.be/mQ6CE8nCbHQ?si=fORN6rZvOwZM-_4e