>>> ... As per area of brood - the larger the area you kill, the more certain you
will be to see bees take action - that's again not simply hygienic behavior, ...
What kind of container do you recommend to place over the brood area to contain the liquid nitrogen? Kind and size? Do you leave the container in place until all the liquid nitrogen evaporates? How much liquid nitrogen do you place in the covering container?
Mike in LA
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