Ernie asks "Aphids are about the same size as
Varoa mites, do you think that these Lady Bugs
will eat Varoa?"
 
Dream on...On the other hand, why not let the Ladybugs in and find out?  It
is for certain they won't hurt your bees.
 
Let's see, fluvalinate should be pulled by now in NH, but even if it isn't,
what I recall of the chemical makeup tells me that it will not hurt
ladybugs.  Neither should essential oils.
 
While it is a different species than we have in the East, just think of the
millionaires there will be in Calif. if they determine that the clustering
ladybugs they have out there will eat varroa!
 
Lloyd
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Owner, Ross Rounds(tm)  the finest in comb honey production.