I have used extender patties in the distant past and dropped OTC (tetra) as a 
treatment for AFB some years ago only to return to it for European FB. 

Dang....talk about going full circle over 30+ years. We now dust once with tetra 
and once with tylan in the spring. Sometimes in the fall. 


Nowdays, our focus is on varroa control with a constant treatment before and 
after honey crops with rotations. Oddly enough, AFB is a non-problem and is 
appropriately on the back of the radar. I suppose it's the same for many of us. 


I'll weigh in with extender patties being being a culprit in resistance of AFB 
spores to OTC. I know guys that just left them on all the time. For months at a 
time. 

Allen, you are arguing that it was not necessarily a cause, and rather well I 
must say. I admire you as a devil's advocate, but I'll have to disagree this 
time. 


I hated having the slimy things in the hive. 




 Kirk Jones

Sleeping Bear Farms   beekeepers making honey...
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