Most of my hives have more than 1 honey-filled super above them & I have constructed a bee escape board from David Cushman's design http://www.dave-cushman.net/bee/vortexescape.html.
I plan on trying this versus the other methods (blower, fume, brush...). My question is those of you that have used escape boards, is it employed a super at a time, or can I put it under multiple stacks ie 2-3 at once?
Also, these are booming hives - would it be wise to place a new hive body immediately below the escape board to give them some room to go? Heat indexes are +100 this week.