> It seems like it would be hard to time when to check cause even if you
knew the math, you would have to know the exact time a queen started laying
to use it.

It is extremely simple to test this when you start nucs with a queen cell.
No trouble at all to find purple-eyed brood to open for checking.  I
suggest less time on the internet, and more time looking inside the hive.

I have posted a free-to-use mite model online, in which you can input any
of the scenarios discussed, and then run a simulation to see the results.
It would only take minutes to answer some of the questions posted to this
thread.

Also of interest: PICCIRILLO Picirillo & De Jong (2004) Old honey bee brood
combs are more infested by the mite Varroa destructor than are new brood
combs.  Apidologie 35 (2004) 359–364  DOI: 10.1051/apido:2004022

-- 
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com

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