I have one that has as always had an attitude but workable. I was going to requeen it this year. Well where I have it at a cow got out and knocked it over about 2 weeks ago. I went out to fix it in 40deg weather thinking they would be cold and I could fix it. As soon as I got close they were all over me. Tried smoking, nothing. They are not happy at all. So I said screw it and covered them with a heavy black tarp and figured I would kill them off and save the equipment. Well I went to gather the equipment today and they chewed some holes thru the tarp and were bringing in pollen. They weren't near as busy as before or as they should be, but they aren't near dead. Any ideas on the best way to kill them off without spraying? Lots of good drawn out frames worth saving.