Hello All,
At this point in the discussion I must remind all that what makes   the
control of varroa so very hard is the fact we are trying to kill a very
small critter (varroa) on a very small honey bee without doing serious
chemical damage to the bee and contaminating comb.

If you look at the way our U.S. drug companies get drugs approved the final
proof is in the testing.

The USDA can use Amatraz to experiment when ever it feels the need AND HAS.

In Florida both Fluvalinate & amatraz were tried by the Florida inspection
service to kill varroa which were  not being controlled by checkmite strips.
Those Florida inspectors reported at the ABF convention in K.C.(2003) that
both returning to Apistan and  use of an Amitraz strip did not provide
control.

One of the researchers which worked on the abstract Dr. Haung posted was
Jeff Pettis and Jeff was one of the USDA people reporting the  lack of
control by both fluvalinate & amatraz  to control satifactory those varroa
*proven* by the *Pettis test*  to be  coumaphos resistant varroa.

Zack said:
There is no scientific evidence (yet) that fluvalinate resistant mites are
also coumaphos resistant.

When you add the word (yet) I  believe in your mind you would not be shocked
to find scientific  evidence to prove that the coumaphos resistant varroa
now found in Florida  and New Jersey are in fact resistant to all three of
these chemicals coumaphos, fluvalinate and amatraz.

If scientific research says those varroa should have reached the LD 50 and
did not then is the problem in the application?

As a small orchard owner I realized years ago that timing and method of
application was as important as the chemical used.

Bob

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