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  1. Re: Is it tougher and tougher to control mites with OAV?

    I also wonder about mites ability to develop resistance to oxalic acid with glycerin, as the mode of delivery is different than OA Vaporization.

    Glycerin release, is, I'm assuming a vapor over...
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    Re: Best Feeder (top, 8F)

    I've had good results with the mann lake top feeders w/supers.

    One disadvantage is that they're $25 each.
  3. Re: Mite Treatment Cost Comparison Thread

    As indicated in my post, I have not used formic acid. If you'd be willing to provide the forum more specific information, that would be helpful.

    Also - could you please provide us with a cost for...
  4. Re: Mite Treatment Cost Comparison Thread

    Thanks for pointing this out.
  5. Re: OAV with honey supers/Fall Extraction Blues

    Here's the assay from AVANTOR PERFORMANCE MATERIALS for Oxalic acid: https://us.vwr.com/store/product/4554338/oxalic-acid-dihydrate-99-5-102-5-crystals-baker-analyzed-acs-j-t-baker

    Assay...
  6. Re: OAV with honey supers/Fall Extraction Blues

    Yes, but what's the origin?

    Is it some questionable country like China with zero quality control? Or is it made in a Laboratory in the US?

    Remember, this is a bucket of wood bleach. No one in...
  7. Re: OAV with honey supers/Fall Extraction Blues

    This is interesting.

    The different OA options range in purity, and there's differences between manufacturers as well.

    IMO this is the biggest issue with Oxalic acid - we don't have any "food...
  8. Mite Treatment Cost Comparison Thread

    The purpose of this thread is to carry out a cost comparison of the various mite treatments available.

    The thread will assume 2 treatments per hive, and will assume the beekeeper has 10 hives. 2...
  9. Re: OAV with honey supers/Fall Extraction Blues

    This is accurate.

    One of the reasons I'd not recommend treating a hive with any "wood bleach" product.

    IDK how ppl feel comfortable buying a $9 pound of wood bleach and vaporizing that into...
  10. Re: OAV with honey supers/Fall Extraction Blues

    This is an important point. The source of the OA is quite important. For example, I wouldn't treat my bees with any "wood bleach" sold on Amazon, or any "wood bleach" I could purchase at home depot...
  11. Re: OAV with honey supers/Fall Extraction Blues

    It would not surprise me if OAV did not add any measurable OA to the honey.

    The previous thread on calculations represents a conservative MAXIMUM contamination of approximately 25mg OA /lb of...
  12. Re: OAV with honey supers/Fall Extraction Blues

    http://scientificbeekeeping.com/oxalic-acid-heat-vaporization-and-other-methods-part-2-of-2-parts/

    The above article by Randy Oliver reiterates that Europeans readily use OA Vaporization.
    ...
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    Re: Easy OA treatments?

    Odd that someone would opt to spend $100 on a slow wand vaporizer, + the $30 for a giant battery that can only complete 20 vaporizations.

    While it would be possible to get the Easy Vap for about...
  14. Re: OAV with honey supers

    If you're going to send your honey to get tested for oxalic acid, you might as well send some tofu and almonds with that sample as well.

    What you'll find is that the tofu and almonds have nearly...
  15. Re: Undrawn super between honeybound brood boxes?

    However, I wont need to be concerned about swarming.
  16. Re: Undrawn super between honeybound brood boxes?

    Update. Looks like this didn't work out very well. The deeps are lighter now.

    I put them back in their original configuration.
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    Re: Johno's Easy Vap - Vaporizer

    Easy vap has been working consistently.

    What is the recommendation on a fall treatment? Is it the same 5X 5 days apart?
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    Re: Provap vs Sublimox vs Oxalika Pro

    Easy vap is the same as the above, and it's a fraction of the price.

    That said, if you have cash to burn, either of those you listed would work just as well as the Easy Vap.
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    Re: Easy OA treatments?

    If one insists on blocking honey supers during OAV, a single sheet of newspaper is effective.

    Doing that 5X for all the hives with honey supers can be a major task and makes OAV time consuming,...
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    Re: Weighing Beehives-Winter Weight

    Michael,

    What is your opinion about wrapping hives together, rather than individually?

    We live in a very cold climate like yours, and I was planning on wrapping 4 or 5 colonies all pushed...
  21. Re: Fall Extraction Blues

    It's safe to use, even if government uses words like pesticide, etc. Not approved for use. Probably a bad thing if big government catches someone doing it.

    Please see...
  22. Re: Fall Extraction Blues

    One option is to switch to OAV, safe to use with honey present.

    Or formic acid.
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    Re: Formic Pro deadouts

    This is a good point.
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    Re: nuc abscond question

    Arkansas is an extremely warm climate.

    That forcast made me cringe.

    What's the weather like in the summer?
    ...
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    Re: Formic Pro deadouts

    It's your decision, but your options dwindle - now you've got to go spend a bunch of money on formic acid treatments. Or spend a fortune on Apivar, etc.

    Just to reiterate previous threads:

    OAV...
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