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Discussion Starter · #1 ·
Hi guy's
I have missed the chance to apply OA in best conditions which would be 5 C to 8 C.
Now here we have temperature of -3 C to -5 C.
Can I apply oxalic in such cold weather? Does anyone have experience with such situation? Could it harm clustered bees or could this treatment be not efficient?
Thanks
 

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If you treat your bees with OA when is frost you will kill the hive. The warm air from the evaporated acid open the cluster a little and the bees can’t find the way back when your finish the treatment. Wait till the temperatures are a few degrees above freezing.
 

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Discussion Starter · #3 · (Edited)
Thanks Axtmann, I was suspecting that such a thing could happen. I know that people do use dribble OA treatment when it's few C grades bellow zero, but vaporization is somewhat different.
 
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