If I could have found the nests in the field next to my hives, they would be gone and I would still have 2 hives. My son-in-law is a logger; he said he has seen them about 50 feet apart in the woods, which are well within flying distance for both the bees and the jackets. Even putting out traps does not catch enough of them. I even tried standing near the front of the hives (protected) and squashed as many as I could pinch between my gloved fingers or under the blade of my hive tool.
It didn't help. The bees are gone.