Results 1 to 12 of 12
  1. #1
    Join Date
    May 2009
    Location
    Indian River, Florida
    Posts
    226

    Default Thymol treatment for Varroa

    I have been treating hives for Varroa using my own formula made from crystals of Thymol 91% alcohol and high grade mineral oil. 8-12 grams of Thymol crystals dissolved into about 3 ounces of 91% alcohol and then after dissolving the formula I add about 6 ounces of high grade mineral oil. I cut cardboard strips about 8 inches long and 1 -2 inches wide and let these soad for a period of time in the solution. After soaking I place these in a ziploc bag and transport to the bee yard.
    My method of placing these in the hive varies, I have placed some of these down in the brood chamber between the frames and others I have placed on top of the brood chamber top bars. My success has been good, I seem to get good results from either application. I have been repeating these applications again in ten days.
    Does anyone have other formulas for mixing?
    Also I have soaked beer coasters and used on the top bars as well, they work just fine.

  2. #2
    Join Date
    Feb 2006
    Location
    Herrick, SD USA
    Posts
    4,453

    Default Re: Thymol treatment for Varroa

    Have the bees pretty well disposed of those in 10 days, if not do the remaining strips still seem to have an effect on the bees 10 days later?
    "People will generally accept facts as truth only if the facts agree with what they already believe."- Andy Rooney

  3. #3
    Join Date
    Dec 2002
    Location
    Rhineland-Palatinate, Germany
    Posts
    831

    Default Re: Thymol treatment for Varroa

    Broodhead, I would be careful with alcohol, this is very poison to bees. You might loos lots of bees the first two or three of days. You can use Thymovar or make your own, a mix of thymol and oil in a sponge. It takes longer to get the right amount of fumes to kill the mites than pure thymol and you pay for oil you don't need, but the treatment time is more than 10 days, and this is most important.

    Using alcohol, you should let it sit open for some days till most alcohol is gone, but than a big amount of thymol is also gone with it. You can make your own "apiguard", mix the thymol cristals with vaseline and fill it in a lid from jars or spread it on top of the frames. Grind the thymol cristals with a coffee grinder to a powder, this gives a much better result.

    Thymol itself is the active mite killer and any form will work. Check the result from your recipe and see how many mites are left. The result can go from a 50% up to over 95% mites kill, depends on the conzentration of fumes in a certain time in you hive.

    Before I used pure thymol in a strip form, I had the best result with lids, filled with thymol powder and a fly screen (hold by a rubber band). The only downside was, the girls tried to close the screen with propolis and I need a spacer for the lid. The bees try it with the strips also, but the thymol is in a kind of fabric or felt and propolis can't hold the fumes back.

  4. #4
    Join Date
    May 2009
    Location
    Indian River, Florida
    Posts
    226

    Default Re: Thymol treatment for Varroa

    The alcohol is so dilute that it has no effect on the bees. The alcohol is used only to dissolve the crystals. The oil is absorbed into the alcohol and is soaked into the strips for a longer effect time. I also thought about using pure grain alcohol, we call it moonshine and the thymol will dissolve it the booze and it will not kill the bees. Hate to waste good booze, but I will give it a try.
    Now about that vaseline, that is a petroleum base and I would use something else that is food safe.
    Thanks for the suggestions, Broodhead

  5. #5
    Join Date
    May 2009
    Location
    Indian River, Florida
    Posts
    226

    Default Re: Thymol treatment for Varroa

    They are dry and do show some signs of wear. The bees sometimes try to comb them into the frame, but usually not. The good thing about this is that the cost of treatment is a fraction of what Apiguard is and the results have been just as good. Eighteen bucks a pound for the thymol crystals and a few bucks for the alcohol and oil. I really like this approach. Broodhead

  6. #6
    Join Date
    Apr 2005
    Location
    havana fl
    Posts
    1,358

    Default Re: Thymol treatment for Varroa

    I dissolve the crystals in heated oil no need to use alcohol.
    Im really not that serious

  7. #7
    Join Date
    Dec 2002
    Location
    Rhineland-Palatinate, Germany
    Posts
    831

    Default Re: Thymol treatment for Varroa

    If you dissolve Thymol in heated oil it starts to evaporate immediately and a big part of Thymol disappears before it's in the hive.

    Heating up Thymol is danger, be very careful you can be dead in no time. If you do it in your kitchen ..... your wife will kill you right away.

  8. #8
    Join Date
    Apr 2005
    Location
    havana fl
    Posts
    1,358

    Default Re: Thymol treatment for Varroa

    Quote Originally Posted by Axtmann View Post
    If you dissolve Thymol in heated oil it starts to evaporate immediately and a big part of Thymol disappears before it's in the hive.
    Seems like alcohol will evaporate quicker
    Im really not that serious

  9. #9
    Join Date
    May 2010
    Location
    Fort Lauderdale, FL
    Posts
    261

    Default Re: Thymol treatment for Varroa

    I only have 40 hives, so a tub of Apiguard seemed simpler.
    I went somewhat low dose this time as a test.
    $90 tub was less than half used after 2 treatments, so a rough estimate is $1 hive.
    I got sloppy, and used a turkey baster, ran a bead down a couple frame tops.
    They track it all over anyway.
    acrylic projects picture blog
    http://plasticsjournal.livejournal.com/

  10. #10
    Join Date
    Jul 2013
    Location
    Sacramento, CA
    Posts
    2

    Default Re: Thymol treatment for Varroa

    Hello I apologize for such an off topic question. Where can i purchase thymol crystals in the USA? I need laboratory grade crystals. thank you

  11. #11
    Join Date
    Nov 2009
    Location
    Jacksonville, Florida
    Posts
    1,690

    Default Re: Thymol treatment for Varroa

    I haven't bought any from them but, here's one place. Most health food stores sell them.
    http://www.medichest.com/thymolcrystalsnf100gram.html

  12. #12
    Join Date
    Oct 2013
    Location
    Lake County, Florida
    Posts
    1

    Default Re: Thymol crystals. Where to buy.

    Quote Originally Posted by natureway View Post
    Hello I apologize for such an off topic question. Where can i purchase thymol crystals in the USA? I need laboratory grade crystals. thank you
    I just found this.... $48.00 for 2.2 pounds of Thymol crystals at http://www.newdirectionsaromatics.co...cal-p-751.html

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Ads