>Bill, I OA(v)'d many hundreds of colonies over 3 years. Some 3 times, 7 days apart in the brood rearing season. I marked all stages of brood, and followed development of larvae. I could see no damage to the brood, or any noticeable bee death. 

OK.  I think I know what you said, but just to be sure, you say you used vapourized OA multiple times at one-week intervals and saw no adverse effects on the bees or brood?

> No noticeable mite death either.

Are you also saying that you saw no observable mite mortaility either?

And what method and equipment did you use?

And why did you continue to do it then?

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