According to David Eyre:
 
>         1. Has anyone got experience of any anti-varroa floor?
>        >
>         For those unfamiliar with Anti-Varroa floors, the thinking is that there
> is a natural drop of varroa off the bees. With a solid floor they can crawl
> back up to reinfest the bee, whereas the mesh or open floor allows the
> varroa to drop out of the hive.
>         Please reply to the list, I would like some discussion as I believe
> these floors have merit.
 
 
David (and others)
 
I found information on Anti-Varroa floors at:
 
http://www.apiculture.com/plateau-anti-varroas/
 
 It's a French site, in French -- I don't know if it's
available in English or not, but the diagrams are
self-explanatory.
 
Regards,
 
Fred
 
Virginia, USA
 
38 degrees 2 minutes North
79 degrees 5 minutes West