I was looking through an older (early '70's) bee book. It suggested using 1/2 teaspoon of ammonium nitrate in a well lit, hot smoker to knock out a hot colony. The burning ammonium nitrate produces nitrous oxide & knocks out the colony for a while.
Have you heard of this? Does it work without killing too many bees?.
We usually just requeen a mean colony. That usually fixes the problem without too much loss of bees.



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worked great on the yard. spread it by hand. killed everything it touch but man after it rained the grass grew like wild fire in moon shaped patches since i didnt spread it evenly and was by hand. I had to laugh. so had dark brown dead burned grass from too much fertilizer but in 2 weeks that burned spot was a dark green fast growing grass. I still have access to those rail yards too














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