>>Note: it must be above freezing to use any of the two OA delivery
>>methods.
>I have been using dripping method for several years and have done it 
>many times in - 2 - - 10 C.

How (and when) do you verify your colonies are broodless?  (I assume 
you don't break the frames apart in freezing wheather.) 

Regards,

Waldemar

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