My hives are also very strong. Have not yet found a dead hive, but did have
some I had to feed. Like some others, I did not treat last fall...and
worried every week!
Last year I did freeze drone brood an average of 3X per hive, and I almost
completely use screened bottom boards, but don't know that those were the
reasons why Varroa seemed non-existent last fall.
Lloyd
Lloyd Spear, Owner of Ross Rounds, manufacturer of comb honey equipment
for beekeepers and Sundance pollen traps.
http://www.rossrounds.com[log in to unmask]