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  1. #1
    Join Date
    Jun 2009
    Huntsville, Alabama

    Default OA Vaporizer...when to start in spring?

    What's the best timing to do the 3-4 week OA vaporizer treatments in the spring? Before build up starts, during? Assuming before but don't want to do it if it's still too cold.
    30 hives and counting...
    Huntsville, AL: Alabama's best kept secret

  2. #2

    Default Re: OA Vaporizer...when to start in spring?

    I don't have much experience with OAV but what I've read suggests that the optimum temperatures to treat would be between 40 and 50F. That way most of the bees are still in a cluster but not so tightly that the vapors can't penetrate. I think, once the temps are above 60, I'd wait and treat early am or late afternoon. My thinking is that you'll get a more effective treatment if most of the foragers are in the house. I think you can start any time. Just my inexperienced opinion.
    Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted. - Emerson

  3. #3
    Join Date
    Jul 2013
    Pleasant Shade, TN

    Default Re: OA Vaporizer...when to start in spring?

    See Randy Oliver's website on varroa management.

    Performing a "flash" treatment on the hive when there is little to no brood (ie before buildup) will kill the vast majority of the phoretic mites depending on your treatment type. Since, there is little brood, there are also few mites within the brood. Most mites are phoretic during this time.
    A man is worth just as much as the things about which he busies himself- Marcus Aurelius


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