Does anyone know of a simple formula to make to put in swarm catchers to
help attract swarms?  I know we can buy something called "Swarm Catch"
from Dadant.  Would anyone know how to make it?  I've put a few swarm
catchers out here in the New Territories and am hoping to attract some.
My six hives are all feral that were found in this area.

Thank you for any answers!

Making "Hong Kong Honey" with Chinese bees.

Justin, (16)
Fanling, Hong Kong, China