I use excluders for extracting supers and cut comb, but not for Ross
Rounds.  Most years I can produce 30 or more supers of Ross Rounds without
the queen laying in them, but once is every few years a single queen will
lay a few eggs in the bottom rows of the Ross Rounds.

I was unsuccessful in using excluders until I started putting them on with
the first supers, in mid April here in upstate NY.  The bees go up through
the excluders to clean out the honey left after extracting, and then
continue to go through the excluders when the flow starts.  My brood nest
is mostly a deep and a medium, but sometimes two deeps.  I don't see any
difference with excluders between the two deeps and a deep and a medium.

Before putting the excluders on early in the season, I had great
difficulties getting the bees through the excluders.

-- 
Lloyd
Office/Honey House 518-573-8246
Lloyd Spear Beekeeper Inc.
Ross Rounds Inc.

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