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  1. #1
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    Default Best Late Fall Varroa treatment?

    I'm asking this in the commercial forum because you folks are highly qualified to give a valid answer. Specifically I am most interested in what EPA approved treatment is most recommended for the late fall broodless period which here is roughly between Thanksgiving and Christmas. It can be cold (freezing overnight at times) at that time here but there are usually ample opportunities to work when the weather is fair and bees are flying with temps in the 60-70s.

    I am preparing for a presentation on treatment options aimed mostly at newer beekeepers many of whom may not have treated yet because they are confused by what to use, when and how to use it. I want to encourage them to take this last good opportunity this season to decide and take action.

    Thanks for your help, and sorry for the amateur question in your space.
    since '09-25H-T-Z6b

  2. #2
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    May 2012
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    Cheyenne, Wyoming, USA
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    Default Re: Best Late Fall Varroa treatment?

    NON-EPA: Oxlic acid dribble
    EPA: HopGuard

  3. #3
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    Apr 2013
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    Spanish Fork, UT, USA
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    Default Re: Best Late Fall Varroa treatment?

    The only mite treatment that I have used in the late fall is Oxlic acid dribble. The fogging method may work as well.

  4. #4
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    Feb 2011
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    Belpre,Ohio, USA
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    Default Re: Best Late Fall Varroa treatment?

    Oxalic vapor will be of little use if the bees are in cluster, Oxalic dribble would then be your best bet because it is dribbled directly on and into the cluster, HopGuard as well as FMGO fogging would not penetrate the cluster either.
    Bill...in Southeast Ohio

  5. #5
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    Manitoba Canada
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    Default Re: Best Late Fall Varroa treatment?

    What are you counts?

  6. #6
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    Nov 2012
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    Kingston, Tennessee, USA
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    247

    Default Re: Best Late Fall Varroa treatment?

    Apivar treatment right now.

  7. #7
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by WWW View Post
    Oxalic vapor will be of little use if the bees are in cluster,
    not if you apply a little smoke.

  8. #8
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    Sep 2009
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    Millbury, MA, USA
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by WWW View Post
    Oxalic vapor will be of little use if the bees are in cluster,
    not if you apply a little smoke.

  9. #9
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by Jon B View Post
    The only mite treatment that I have used in the late fall is Oxlic acid dribble. The fogging method may work as well.
    OA in both the dribble and vaporization methods work well this time of year. Vaporization is easiest as there is no need to crack the hive. Camer07 is correct, a little smoke will break that cluster for vaporization to work. With little to no brood both dribble and vaporization are very effective.
    http://OxaVap.com
    Your source for Oxalic Acid Vaporizers

  10. #10
    Join Date
    Nov 2011
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    Rader, Greene County, Tennessee, USA
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    Default Re: Best Late Fall Varroa treatment?

    Perhaps those of you suggesting oxalic acid missed this part of David's original post:
    Quote Originally Posted by David LaFerney View Post
    Specifically I am most interested in what EPA approved treatment is most recommended for the late fall broodless period which here is roughly between Thanksgiving and Christmas.
    Oxalic acid is not a registered miticide in the US. The effectiveness of OA is not the issue here.

    From Randy Oliver:
    Both lactic acid and acetic acid have shown some effectiveness in killing varroa, but oxalic has become the organic (carbon-containing) acid of choice. It is approved for, and much used in, a number of European countries, Canada, and New Zealand. It is not yet registered for use in the United States, and as such, this article is directed toward our foreign friends, and informational only for U.S. beekeepers. The ABF, headed by Troy Fore, has petitioned the Feds for registration of OA in sugar syrup, based upon research by Marion Ellis, of the University of Nebraska.

    http://scientificbeekeeping.com/oxal...-1-of-2-parts/
    Graham
    --- Victor Hugo - "Common sense is in spite of, not the result of, education.

  11. #11
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    Default Re: Best Late Fall Varroa treatment?

    If they would treat now (not waiting till between Thanksgiving & Christmas) during this mild temperature period ........ MAQS w/b my suggestion.
    http://OxaVap.com
    Your source for Oxalic Acid Vaporizers

  12. #12
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    Cookeville, TN, USA
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by Ian View Post
    What are you counts?
    This isn't really for me - it's for our beekeepers association. Some of them have never treated or counted - some of them are having mite related issued right now - i've been contacted today about it. It's just to help nudge them into making a decision and give them some information to base it on. No doubt in the discussion other beekeepers will chime in with what they use.

    Assuming you had hives that did need treating in late fall, what would you use?
    since '09-25H-T-Z6b

  13. #13
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by snl View Post
    If they would treat now (not waiting till between Thanksgiving & Christmas) during this mild temperature period ........ MAQS w/b my suggestion.
    I don't disagree, and that might be THE way to go - but if you kill a queen this late you're in a bind. Also, formic acid might be hard on the last batch of brood that can be present right now.
    since '09-25H-T-Z6b

  14. #14
    Join Date
    Feb 2011
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    Belpre,Ohio, USA
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    Default Re: Best Late Fall Varroa treatment?

    Well I suppose it would probably be best to hear from someone with EPA approved treatment experience, I have none to give. I have never heard of smoke opening up the cluster and have no way of seeing that happen so I am probably the wrong one to be giving advice on this thread. So far I have 2 swings and 2 misses so I will regress and let you all with more experience continue with this thread .
    Bill...in Southeast Ohio

  15. #15
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    May 2010
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    Spokane, Washington, USA
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    Default Re: Best Late Fall Varroa treatment?

    apivar.

  16. #16
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    Manitoba Canada
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by David LaFerney View Post
    Some of them have never treated or counted - some of them are having mite related issued right now

    Assuming you had hives that did need treating in late fall, what would you use?
    I did not treat this fall, my spring treatment with Apivar worked very well. Mite counts were well within my threshold

    I know this is not what your asking for, but here it is anyway. Tell these guys that they need to monitor and treat before the mites cause the damage, not after. If they are contemplating treatment after they start seeing visual signs of mites in the hive, the hive is likely doomed, so they would be wasting their time.
    Ian Steppler >> Canadian Beekeeper's Blog
    www.stepplerfarms.com

  17. #17
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    Default Re: Best Late Fall Varroa treatment?

    Actually that is very helpful. Thanks.
    since '09-25H-T-Z6b

  18. #18
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    NE Calif.
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    Default Re: Best Late Fall Varroa treatment?

    >>If they are contemplating treatment after they start seeing visual signs of mites in the hive, the hive is likely doomed, so they would be wasting their time. <<

    In terms of saving the hive, yes . But also consider that the mites are going to jump on any robber bees that show up and carry those nasty virus loads to other hives. So even though a mite treatment too late will likely just push the crashing hive over the edge, it could save nearby hives.

    Also, from a commercial point of view, if any hives in a yard need treatment, all hives get treated at the same time.

  19. #19
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    Default Re: Best Late Fall Varroa treatment?

    Quote Originally Posted by WWW View Post
    Oxalic vapor will be of little use if the bees are in cluster
    Even tho the question related to approved miticides, just wanted to clear this up. OA vapor will penetrate the cluster and kill mites.
    http://OxaVap.com
    Your source for Oxalic Acid Vaporizers

  20. #20
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    Grosse Ile, Michigan, USA
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    Default Re: Best Late Fall Varroa treatment?

    I have just used MAQS myself, I know I'm doing it about a month or so later than I should have, but I did it anyways since I had already purchased the treatments. The temps have been no higher than 70 degrees since I applied it over a week ago, and the nights have been in the 40's. I did not have any negative reaction like bearding, most likely because of the lower temps. Even though I was concerned about queen issues this late, I don't expect there will be any problems there either because of the lower temperature range use. My only concern will be whether or not it helped at all because of the low temps we have been having. Maybe using MAQS in the higher end of the range helps kill more mites because the formic acid is released better, but you also have more negative visible effects on the bees, jmo.

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