>On the other hand, fumagillin is expensive and may leave residues in honey.

Is it really that expensive? 3 treatments of 1.5g(4.5g total)= $1.31 per 
colony+$0.20 for HFCS=$1.51 per hive. As for the labor, I'd rather open a 
hive 3 extra times and have them healthy to produce a crop instead of taking 
more time to pick up a bunch of deadout equipment. That to me seems pretty 
cheap now that I am looking at a mountain of deadouts(approx 400-500 over 
the last year) that could have produced me honey that is $1.50 per lb. 
Maybe they guys that have been feeding fumagilin are just lucky and 
fumagilin has nothing to do with there success(I doubt it).

As for the residue in the honey-The bees are bringing in (I think)  much 
worse from their enviroment they work in.

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