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I harvested a couple of weeks ago and put the supers back on to be filled between now and fall. I want to do an OAV treatment. Could I use honey robber (or something similar) to drive the bees out of the supers, take them off, treat and then put them back on?
 

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I harvested a couple of weeks ago and put the supers back on to be filled between now and fall. I want to do an OAV treatment. Could I use honey robber (or something similar) to drive the bees out of the supers, take them off, treat and then put them back on?
Yes. Or you could place a barrier (board, political sign, etc.) between the brood chamber and your supers and then OAV. The bees trapped in the super during treatment will not be directly exposed to the OAV vapors. Some believe that OAV treatments leave crystals that continue to come into contact with bees for a few days after treatment and give the treatment some lingering effectiveness at killing mites. Others dispute that. I have not seen any scientific studies either way, so I don't have an opinion on that.
 

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I'd take them off. Leaving them on with a barrier will require airing out the brood area before putting the supers back on. Simply pulling a barrier out of the way without ensuring the gas has dissipated doesn't sound like a good idea to me.
 
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