> 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
[...]
This certainly sounds to me as though it would work.  I am just
worried about one thing: (same thing I am always worried about) AFB
spores can remain viable on combs for up to thirty five (or is it
more?) years.  I realise that with no honey in the combs, the bees
are not going to ingest any of these spores, but they may pick them
up on their bodies (or alternatively, drop them off their bodies) and
hence spread the disease around.  I am always wary of leaving any
used hive material available for general access.
Adrian.