For those who were following this thread, which gets broken every time a new month 
comes along, here is an update.

We are now at Day 131 of observing and recording daily varroa drop counts on six hives 
which have received five treatments to date, beginning in early October.

All treatments were with oxalic acid fumigation except the last which was OA on four of 
the six and Apivar on the remaining two. Two different devices for evaporation were 
used at different times and compared.

Currently drops are approaching zero for all hives.

The results to date are summarized in a table and charts at
http://www.honeybeeworld.com/diary/files/drop.htm

The details of the observations, explanations and speculation of possible 
interpretations are in the dairy beginning at
http://www.honeybeeworld.com/diary/2011/diary101011.htm

The MS Excel data record file is also available on these pages.

Comments and queries, and especially criticisms are welcomed either here on BEE-L 
or on the honeybeeworld.com forum. http://www.honeybeeworld.com/forum/

Allen Dick, RR#1 Swalwell, Alberta, Canada T0M 1Y0
51 33'39.64"N 113 18'52.45"W
http://www.honeybeeworld.com/diary/

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