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  1. #1
    Join Date
    May 2013
    Location
    Mindo, Ecuador
    Posts
    15

    Default Varroa and oxalid acid

    hello

    i live in ecuador - so seasons are very different.

    i have a few hives with varroa.
    i would like to treat with milk or oxalic aciid, as there is no medication availablle here in ecuador.
    it says everywhere to treat in the brood free time.
    the point is: i do not have broood free time as there is no winter.

    any suggestions?

    thanks
    ingo

  2. #2
    Join Date
    May 2011
    Location
    Livermore, CA
    Posts
    1,383

    Default Re: Varroa and oxalid acid

    Buy the Oxalic Acid Vaporizer and you can tret any time of year. Just do it once a week for three weeks and it knocks the mites down pretty good.

    You can use the vapor system without hurting the bees, but the pour on method is only intended to use once when there is a broodless period.
    Coyote Creek Bees

  3. #3
    Join Date
    Jan 2006
    Location
    Hässleholm, Sweden
    Posts
    51

    Default Re: Varroa and oxalid acid

    If you confine the queen to 1-2 frames (the only frames in the bottom box with a queen excluder) for 15 days, then release her and after another 7 days remove those 1-2 frames (put in freezer or burn them). At that moment your hive will have no capped brood at all except some drones and you can treat with oxalic acid.

  4. #4
    Join Date
    Jan 2009
    Location
    Cookeville, TN, USA
    Posts
    3,973

    Default Re: Varroa and oxalid acid

    That is a very good tip Olofl - which could also be used with other treatments of course. Thanks.
    Since '09-25H-T-Z6b

  5. #5
    Join Date
    Jan 2006
    Location
    Hässleholm, Sweden
    Posts
    51

    Default Re: Varroa and oxalid acid

    Removing those 1-2 frames of capped brood will reduce the number of mites considerably. You might want to measure your mite load to decide if you can postpone the treatment and perhaps repeat the process after a number of months. Especially since open brood might take some damage from treatments.

  6. #6
    Join Date
    Jan 2009
    Location
    Cookeville, TN, USA
    Posts
    3,973

    Default Re: Varroa and oxalid acid

    For people in most of the United States - right now is probably Not a good time to do this because it would seriously interrupt the important fall brood build up. But right after honey harvest in July, and early December when brood production is naturally low it might be a great time.

    Also this - there is a fair chance that they will build queen cells above the excluder so one needs to keep an eye out for that.
    Since '09-25H-T-Z6b

  7. #7
    Join Date
    May 2013
    Location
    Mindo, Ecuador
    Posts
    15

    Default Re: Varroa and oxalid acid

    hi

    thanks for the suggestions - i treated with oxalic acid - lets see what happens

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