The best way to improve your odds is to place additional traps.
I have been giving permission to set two swarm traps where the wild bee tree is. It is private property and the tree is close to the road so this spring I am going about 1000 feet in the woods and set the first trap then move over about 1000 feet and set the other trap that way both traps will be about 1000 feet from the bee tree. I am going in that distance to keep any one from spotting them hopefully they want venture that deep. I will paint them gray bark color like the trees.
Question do you think 1000 feet is to far away from the bee tree? Should I back off to about 500 feet? I need to keep my traps out of any ones sight especially children so no one will get curious and start investigating and get stung.