To stop robber bees empty and DRY comb can be put close to the hive
entrance of the attacked colony. The entrance itself should be a bit
reduced stil allowing desired ventilation. The comb MUST NOT contain any
drop of honey. A large portion of robber bees, especially those not well
informed about the real target, will search for the honey in the pretty
smelling but empty comb. After some time they return to the maternal
colony and probably inform it that the source was exhausted. The attack
ceases than rapidly. This workes well if the robbed colony has some
endeavour to defence.
 
Vladimir Ptacek,
Brno, Czech Republic
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