The nest is in the ground. I waited till dark and belly crawled to within about 6 feet of the entrance and waited to see if any were moving around. When the coast was clear I flipped a pail with about a half pound of 5% Sevin dust over the top of the hole and left it covered up. I think I'll wait a day or so before mowing.
I was surprised I didn't get stung, thanks for the help folks.
Chip
