Varroa Mite Control - Oxalic Acid

Paul Kelly, research and apiary manager, and our volunteer Wendy describe how to dispense Oxalic Acid Solution into the hives.

Filmed by Zoey Ross and edited by Wissarut Sukhaket.

For more videos, check out the University of Guelph's HBRC YouTube channel at this link: @University of Guelph Honey Bee Research Centre

[lambbrookfarm]

Geez Paul, it looks like a pretty strong colony in the back up against the trees. But seriously, thanks for all the great information you post. You are a go to for how to do in the north, Thanks from Central New Hampshire, US. Have a great fall and winter, Brice

[w]

2 Things. 1 I use a spray bottle and it acts like a smoker as well.I pull the frames one by one and spray both sides. Why does it only last a day or so though? Where does it go if the crystals don't evaporate off the bees? Just a simple mix of a table spoon or two per quart of just water and I think it works well. 2 Is that a bee keepers stack of boxes in the back ground or a bee keepers totem pole.😁

[dj]

🎯 Key Takeaways for quick navigation:

00:21 🍵 *Oxalic acid, used as a miticide, is safe for bees and doesn't contaminate honey or comb.*
01:21 🐜 *Oxalic acid is applied to prevent mite resistance to synthetic miticides like apivar.*
02:23 🍯 *Oxalic acid helps clean up any mites left after initial treatments, preventing re-infestation in the fall.*
03:25 🌡️ *Applying oxalic acid on a cool day is effective as the bees are clustered, enhancing contact exposure.*
03:56 🧪 *Oxalic acid solution should be made fresh each day as it doesn't keep well, and beekeepers should follow regional guidelines for hive care.*

Made with HARPA AI

[gohbtdj]

Hi Paul, Has your department looked at other ways of applying Oxalic Acid? Single yearly application of Oxalic Acid is no longer wise. In New Zealand the use of "Staples", from Dry Wall tape (dull porous type) in three layers and Cardboard Staples is the method of application throughout the beekeeping year. OA Sponges are another. It would be very interesting if your department investigated, monitored the methods. Being a leading University with a bucketful of knowledge on bees, your opinion and the University would be most respected. Regards

[FarmerJohnStephens]

That's a tall one in the back....

[remodelassets]

My guess is when dribbling the liquid between frames you only need to dribble half way as what your assistant did.

[MKIVJZGT]

Great instructions on oxalic acid application thank you. Have been seeing the tall stack of boxes in the back ground from 2 weeks ago with the first set of videos us that a project?

[kushtrimmuja]

Hello, can I treat colonies 2 times with oxalic acid dribble, one time in October and again in December?

[theresak]

Thankyou so much for these videos 😊
Is there a temperature that is too cold to do this liquid application to the bees?

[bees]

I like what I see there. No risk of breathing in vapor

[bryanbetournay]

Is The 50ml dribble method is good to use in Ontario ?

[badassbees]

I use spray bottle..good info as usual though, glad to see you all back 👍

[ekasvenska]

Hi there,
if we have oxalic acid as a fluid(not crystals), 85% solution, how much should we add to the recipe?

[laldinfarmingsandbusinessi]

Why you putted black box over the hive?

[daniellobb]

Love this video very helpful. I also cannot take my eyes off of the 20 foot high colony in the back. What’s going on with that?

[nasserhaddar]

Thank you for your informations,
Kindly please reply the link how to mix the solution i could not find it.
My besr regards
Nasser

[kristinvogel]

Can you please provide the link for your OA recipe?

[dennish]

Can you please tell me what the material you use for your inner cover? Thanks.

[MikeChamplin]

Is your application process & OA quantity the same if treating a double-deep colony?

[offshoot]

is there anything we should know when searching to buy oxalic acid? are there different forms ?