mite treatment question
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  1. #1
    Join Date
    Oct 2017
    Location
    Swarthmore, Pennsylvania
    Posts
    192

    Default mite treatment question

    hi all,

    I'm in E Pennsylvania, it's warming up some and my bees are more active. I checked on them today- saw a few mites on the sticky board. I plan to use formic acid strips as well as oxalic vaporizer again this season

    Question: should I treat w oxalic now while there's little brood? wasn't sure if it's not a good idea to stress the colony as they're just coming out of winter, but then again the mites will likely stress them more..

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  3. #2
    Join Date
    Mar 2015
    Location
    Ocala, Florida, USA
    Posts
    608

    Default Re: mite treatment question

    Don’t hold me to it but I believe they say above 50f for OAV

  4. #3
    Join Date
    Oct 2017
    Location
    Swarthmore, Pennsylvania
    Posts
    192

    Default Re: mite treatment question

    yep- I'm hoping we'll have a few days >50F soon. Just wondering if there's any reason not to hit them with OAV early spring before colony bulks back up, though they didn't seem stressed at all when I did it in fall. I'm guessing it's fine as long as temps ok

    thanks

  5. #4
    Join Date
    Apr 2016
    Location
    Rutland County, Vermont,USA
    Posts
    2,137

    Default Re: mite treatment question

    Recommended min temp for OAV is 37 F. They will not be unduly stressed by treatment. J

  6. #5
    Join Date
    Jan 2015
    Location
    Williamsport, PA
    Posts
    469

    Default Re: mite treatment question

    I will be doing all of mine this week. Sunny and warm-ish days. When I get home from work it's close to dark and they are all in the hive. Spring/Fall I don't mind doing evening treatments.

    Summertime or when it's warm, OAV after dark is a no-no. A full hive of angry bees boils out.

  7. #6

    Default Re: mite treatment question

    I wouldn’t trust a sticky board but would do a alcohol wash and do a count on three hundred bees if over 9 might. I would be doing something. What type and when did you treat last?

  8. #7
    Join Date
    Jul 2010
    Location
    Auckland,Auckland,New Zealand
    Posts
    10,037

    Default Re: mite treatment question

    Formic needs warmer temperatures, go with the OA.
    "Every viewpoint, is a view from a point." - Solomon Parker

  9. #8
    Join Date
    Dec 2008
    Location
    syracuse n.y.
    Posts
    5,231

    Default Re: mite treatment question

    Quote Originally Posted by Oldtimer View Post
    Formic needs warmer temperatures, go with the OA.
    and less stress on the bees and brood
    mike syracuse ny
    Whatever you subsidize you get more of. Ronald Reagan

  10. #9
    Join Date
    Jul 2006
    Location
    Pennsylvania/Florida
    Posts
    456

    Default Re: mite treatment question

    OAV can be done below 50 degrees as long as it it warm enough that they are not in tight cluster inside the box.
    So Probably anything over 40 would be ok for OAV. Maybe even lower if the box is in direct sunlight to help with internal heat.


    I would have been OAV every time we hit 50 Degrees back in Jan/Feb, the least likely time to have capped brood.

    The fewer mites your colony starts with in the Spring the longer you can go without doing and invasive treatment during the year.

    OAV is so low stress on the bees i would still do it once a month during non honey production times(although i'm pretty sure Europe already proved that you can)

    Staying ahead of the mites is the single largest thing you can do to keep your bees healthy and ready to make honey and increase chances of making it through the winter.

    Aaron

  11. #10
    Join Date
    Jul 2006
    Location
    Pennsylvania/Florida
    Posts
    456

    Default Re: mite treatment question

    Delete, duplicate

  12. #11
    Join Date
    Jun 2013
    Location
    Rensselaer County, NY, USA
    Posts
    5,534

    Default Re: mite treatment question

    You can do OAV now. But don't kid yourself, you likely have lots of brood by this point in the season. You are well into your spring build-up - they likely resumed brooding about two months ago. This means a one-shot treatment will not be very effective. OTOH, unlike in the summer when there also is brood, they are probably not going to be going out and constantly bringing new mites into the hive.

    At best, you can give the mites a good whacking now, before you want to super up.

    Look ahead to your longer-range weather forecast in order to pick the best period for the entire series. This will give you a chance to complete each treatment on time. A 3 by 7-day series needs 15 days; a 4 by 5-day series needs 16 days to accomplish.

    I do OAV as low as 37 F during the winter, but the burns are not as good as I'd like to see in temps that cold. Smoke your bees well beforehand to loosen the cluster and get them fanning.

    For your reference in the future. a well-timed, broodless-period, one-shot treatment in late December is the key. Follow that up by checking sticky boards in January to see if you need to repeat the one-shot on a warmish day before they begin brooding in early Feb. (And before they begin flying out of the apiary again.) This will usually leave them clean enough to avoid treating now when they have lots of brood again. I say usually because from time to time this doesn't work. But you can always check that with regular 72-hour sticky board counts all winter long. The other treatment option at this time of year is hanging strips of Apivar, if you have 54 days before you plan to super up. It's probably still too chilly for formic acid (MAQS).

    Nancy

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