For how long do you expect to be able to use Amitraz effectively before
resistance sets in?  What will you use then?

Chris

About time before resistance sets in I have no idea. But I have decided not
to change active principle till that happens.

In the mean time I am learning to use formic acid, that is what I plan to
use next. Formic is not easy to use, there are too many variables to
consider /T, RH, colony strengh, etc.

I think fornic acid is good for orgasmic beekeping, ja!


-- 
Juanse Barros J.
APIZUR S.A.
Carrera 695
Gorbea - CHILE
+56-45-271693
08-3613310
http://apiaraucania.blogspot.com/
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