I have a old dog pen homemade yrs ago still in pretty good shape...roofed and its been unused for a long time...i have been cleaning it up and out to use as a chicken pen till the babies 8 weeks old are big enough to go to farm and join the larger older chicks ...anyway I pushed over a small stack of lumber that was just outside but against the wire and about 20 ground bumblebees came out mad...so i freeze wait till they calm and form a group over the hole...and smacked them with a shovel...killing them...well then i got a good view of im not kidding 50-100 bees coming out ...i have never seen these numbers from ground bees ..in past yrs when i have been confronted with the bee in ground...petro kills them out...i dont want to use that in my chicken area ...any ideas on getting rid of them and keeping it safe for my chick babies