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Mon, 30 Jan 2017 17:35:29 -0500 |
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> Is there any harm in proactively treating with OA vapor while they are clustered?
I was always under the impression that disturbing a winter cluster was a very bad idea and should be avoided at all costs. For example:
> Opening the hive and disturbing the cluster to collect bees in cold weather can be detrimental to the colony, and may even kill it. -- Journal of Apicultural Research 5(1): 63- 64 (1966)
> Factors against winter treatment are the bad effects of disturbing the winter cluster of bees and the difficulty of observing the reactions of the bees to the chemical substance. -- Guy D. Morison Ph.D., M.Sc. (1931) Comments on Chemical Treatment of Acarine Disease, Bee World, 12:8, 89-90
By the way, in the above mentioned article, the treatment was for tracheal mites and one of the treatments was:
> a chemical mixture (2 parts nitrobenzene, 1 part safrole, 2 parts petrol) is known which kills all stages of the mite inside living bees.
PLB
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