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  1. #1
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    Jul 2011
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    athol, massachusetts
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    Default oxalic acid vapor with supers

    Yes or no must they be pulled before treatment?

  2. #2
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: oxalic acid vapor with supers

    Recommendation is to pull before treatment, however, there are a couple of studies that indicate that it does not enter capped honey. Remember that it is not approved for bees in this country.

  3. #3
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    Jul 2011
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    athol, massachusetts
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    Default Re: oxalic acid vapor with supers

    camero7 it was just a hypothetical ? How are your bees in Milbury I am also in Massachusetts

  4. #4
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: oxalic acid vapor with supers

    I think my bees hypothetically inhaled some oxalic vapor this week... bees are doing well... still a good flow going.

  5. #5
    Join Date
    Jul 2011
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    athol, massachusetts
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    Default Re: oxalic acid vapor with supers

    hypothetically speaking glad to hear all is well

  6. #6
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    Jul 2004
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    Sullivan, MO
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    875

    Default Re: oxalic acid vapor with supers

    Hypothetically speaking, take the supers off, treat, then put the super back on. From someone who hypothetically knows what he is talking about. There is already oxalic acid in honey, but don't think we need to chance adding more.

  7. #7
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    Jul 2011
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    athol, massachusetts
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    Default Re: oxalic acid vapor with supers

    You guys are awesome!!!!!

  8. #8
    Join Date
    Apr 2006
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    Pepperell, MA.
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    Default Re: oxalic acid vapor with supers

    I hypothetically remove the supers, regardless of whether the honey is capped or not, before I hypothetically treat with OA vapor. That way, I never have to worry about it. Truth told, the process of moving the supers...if present...takes longer than treating. Hypothetically speaking of course.
    "My wife always wanted girls. Just not thousands and thousands of them......"

  9. #9
    Join Date
    Jun 2009
    Location
    Economy, Indiana
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    54

    Default Re: oxalic acid vapor with supers

    Hypothetically, isn't it recommended to wait until all brood is hatched before "vapor" treatments? Have some frames to bleach, but thought it would at best not be as effective and at worst, kill brood. What's the take from the "experienced" crowd?
    Ken

  10. #10
    Join Date
    Sep 2009
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    Millbury, MA, USA
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    Default Re: oxalic acid vapor with supers

    No need to wait, vapor does not kill brood IMO... you want your winter bees healthy so earlier treatment is better... but you do have to do multiple treatments because oxalic [dribble or vapor] does not kill mites in brood.

  11. #11
    Join Date
    Dec 2006
    Location
    St. Albans, Vermont
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    5,243

    Default Re: oxalic acid vapor with supers

    Quote Originally Posted by camero7 View Post
    there are a couple of studies that indicate that it does not enter capped honey.
    Oxalic vapor condenses on every surface in the hive...including the cappings. I think extracting supers after vaporizing would get oxalic in the honey.

  12. #12
    Join Date
    Mar 2011
    Location
    Fort Worth, TX, USA
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    1,752

    Default Re: oxalic acid vapor with supers

    Where could I hypothetically get oxalic acid and instructions for hypothetically applying it? Is it more effective / safer than Hopguard?
    Time to be a gypsy again, 2014 will be my prep year, my bees want a better area with actual rainfall.

  13. #13
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    Apr 2006
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    Pepperell, MA.
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    Default Re: oxalic acid vapor with supers

    At my local True Value, I can buy "wood bleach" which is oxalic acid. Here is a link to a vaporizer that I've read about:

    http://www.members.shaw.ca/orioleln/vaporizer.html

    I don't have any experience with Hopguard and I'm anxious to learn more.
    "My wife always wanted girls. Just not thousands and thousands of them......"

  14. #14
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: oxalic acid vapor with supers

    Quote Originally Posted by Michael Palmer View Post
    Oxalic vapor condenses on every surface in the hive...including the cappings. I think extracting supers after vaporizing would get oxalic in the honey.
    I agree, I do pull my supers before using it.

  15. #15
    Join Date
    Jul 2006
    Location
    MA
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    19

    Default Re: oxalic acid vapor with supers

    Do the crystals formed by vaporization stay in the hive forever, if you were to vaporize a hive with a super on could you harvest from that super the following season.

  16. #16
    Join Date
    Jul 2004
    Location
    Sullivan, MO
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    875

    Default Re: oxalic acid vapor with supers

    it's not worth the risk, just DON"T vaporize with the supers on. As mentioned you can get it at the hardware store, it is sold as wood bleach, but make sure there is nothing else in there, it should be almost 100% oxalic. Multiple ways to apply it, If I were to hypothetically use it I would use the crack pipe version. 10 bucks or so from a plumbing section, don't forget your propane torch and face mask. I've heard you are supposed to heat it slowly and consistently till it vaporizes.
    ROd

  17. #17
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: oxalic acid vapor with supers

    The crack pipe gives inconsistent results... too hot or not hot enough and you don't get the vapors you need. I think the vaporizer is the best way to go for vapor. I would use the dribble method before I would use the pipe. Ideally some of the oxalic turns to formic during the vaporization process. Problem with the dribble is that it is only good once a year. Lots of very good and reliable info here:
    http://scientificbeekeeping.com/the-...ral-miticides/

  18. #18
    Join Date
    Feb 2011
    Location
    Englewood, CO USA
    Posts
    14

    Default Re: oxalic acid vapor with supers

    So... can supers be removed, and re-installed right after treatment? We have 4 hives setup next to each other. Had 1 hive getting robbed, went in to find it was a deadout. Lots of mites on the bottom board, and some on bees. Want to treat the other 3 hives, since they were probably doing the robbing(and probably bringing mites back to their hive). Took no honey from the bees this year, all hives have 3 mediums of honey on them. Don't want to mess up the honey, in case they have a bunch left over in the spring... which we could harvest.

    Thanks,
    Rick

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