Peter Edwards wrote:          

 

>>>Is the problem here simply excessive use of oxalic acid - and using it at
the wrong time of year?<<<

 

I was sublimating it. (Heating the powder) I've done this for years now
without incident and good mite drops. This system is not as detrimental to
the bees. I agree with the wrong time of year. I waited too late expecting a
fall crop. Had I been home I'd have treated in Aug. Bob Harrison wrote on
this list that if you don't clean them up in Aug, you are going to lose
bees. SO: clean them up in early spring, then 2x in Aug or so will be my
schedule. Any comments?

 

Dick Marron 

 


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