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Informed Discussion of Beekeeping Issues and Bee Biology

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Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
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Sun, 16 Sep 2012 09:03:12 -0600
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> Can someone give some insight as to the better size before I build them
> with the wrong size screen?

Honey bees can get through.Anything with more holes per inch than 6-mesh 
(6 holes per inch).  In fact, I used 5-mesh hardware cloth sheets as 
queen excluders on 2-queen Farrar hives for years, since 20x20 excluders 
were not available.

Some normal bees, but AHB in particular, can get through 6-mesh.  Also 
consider any wasps or hornets in your region before deciding.

If robbers can easily get through, then the whole hive bottom is open to 
robbing.  That may not be a big problem for strong hives, but weaker 
ones may be robbed out.

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