Author Topic: Oxalic Acid Drizzle  (Read 164 times)

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Offline rober

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Oxalic Acid Drizzle
« on: February 11, 2018, 12:22:59 PM »
I found several threads about O.A. vaporizing but not drizzling. anyone in our group using this method?? & if so what were the results?

Offline Bakersdozen

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Re: Oxalic Acid Drizzle
« Reply #1 on: February 11, 2018, 02:57:41 PM »
I used the OA dribble method the first time I use OA.  It worked fine.  I don't remember mite kill numbers.  I just remember that my colonies went through the winter just fine.  I believe I read that someone in research is recommending the dribble method over vapor.  But, I can't back that up.
I got a syringe from the Tractor Supply store. 

Offline Jen

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Re: Oxalic Acid Drizzle
« Reply #2 on: February 11, 2018, 03:24:55 PM »
Hi Rober, I have never used drizzle method personally, always OA vap for about 6 years now. During our last bee meeting we were discussing vap vs drizzle. Our county commissioner said there is now more info on drizzle method and some consensus on drizzle maybe being more effective than vap. I told him that I've been vaping for 6 years now and have never lost a hive to mites at any time of the year. He said "If Vap is working and effective for you then keep doing what you are doing"  ;) 8)
There Is Peace In The Queendom

Offline neillsayers

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Re: Oxalic Acid Drizzle
« Reply #3 on: February 11, 2018, 04:44:18 PM »
Rober,

Here is a page with a lot of info. You may have already seen this.
http://scientificbeekeeping.com/oxalic-acid-powerpoint-presentation/

Hope this is helpful.
Neill Sayers
Herbhome Bees
USDA Zone 7a

Offline rober

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Re: Oxalic Acid Drizzle
« Reply #4 on: February 11, 2018, 04:45:02 PM »
I've read some of that. this looks interesting too.
http://scientificbeekeeping.com/extended-release-oxalic-acid-progress-report-2/
what i'm after is 1st hand experience like baker's
one of the more experienced beeks in my area is using the drizzle method with good results. he's diluting it in water. I've seen where some are mixing it with sugar syrup. i'm looking for details on the recipes as far as how much acid per pint, quart...... to me it looks like drizzling is safer for the beekeeper. it also makes the application simpler since you do not need the vaporizer or
have to drag around a power source.

Offline neillsayers

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Re: Oxalic Acid Drizzle
« Reply #5 on: February 11, 2018, 05:19:17 PM »
The little I know is the dribble is supposed to be harder on the bees and safer for the operator. Opposite for vape. Randy Oliver has instructions on mixing with sugar syrup in that link.
Neill Sayers
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Offline Lburou

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Re: Oxalic Acid Drizzle
« Reply #6 on: February 11, 2018, 08:42:52 PM »
The little I know is the dribble is supposed to be harder on the bees and safer for the operator. Opposite for vape. Randy Oliver has instructions on mixing with sugar syrup in that link.
The limit for dribble is twice a year, more than that hurts the bees.  You put a lot more OA in the hive with dribble, that is why I never tried it.  :)
Lee_Burough

Offline Bakersdozen

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Re: Oxalic Acid Drizzle
« Reply #7 on: February 12, 2018, 05:48:29 AM »
Here is a link to a very informative article written by Jennifer Berry.  It appeared in the October, 2017 issue of Bee Culture magazine.  http://www.beeculture.com/oxalic-better-way/
Jennifer explains the different methods of OA application, how to apply them, and states that she uses the dribble method.  She also gives a brief history of how she learned about OA and how Brushy Mountain is the only authorized distributor of OA for use on honey bees.
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Offline rober

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Re: Oxalic Acid Drizzle
« Reply #8 on: February 13, 2018, 10:35:02 AM »
I'm still reading up on this. there's a lot to absorb. anything by Jennifer berry is always a good read, thanks baker. so what i'm getting so far is that for a dribble the O.A. needs to be mixed with 50/50 sugar syrup. it's not effective when mixed with just water. does this table look like the one to use? I've found several different versions online.
http://scientificbeekeeping.com/oxalic-acid-treatment-table/
 

Offline Les

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Re: Oxalic Acid Drizzle
« Reply #9 on: February 13, 2018, 12:31:56 PM »
I have a vaporizer and have used it several times.  One of my concerns is finding a day when the temperatures are not too hot.  Here in NYS it seems that the leap from Winter to Spring is always extreme.  We can be 30 degrees one day and 85 degrees two days later.  Our Springs never seem to be a gradual warm up.  Another issue is I hesitate vaping too soon coming out of winter because the bee population is at it's lowest. I don't want to vap the bees when they are at the end of their life and kill some of them off  before the new bees hatch.   I know vaping does tend to kill off some bees but if you don't do it early enough, than you don't catch the mites before they are sealed off with the larva.  Perhaps the drizzle method would eliminate some of my concerns?
Last fall after the supers were off, I used Formic Acid because I know it can get the mites even when they are sealed in with the larva.  I did like the results I got as far as dead the mite count.

Offline neillsayers

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Re: Oxalic Acid Drizzle
« Reply #10 on: February 13, 2018, 04:43:42 PM »
I'm still reading up on this. there's a lot to absorb. anything by Jennifer berry is always a good read, thanks baker. so what i'm getting so far is that for a dribble the O.A. needs to be mixed with 50/50 sugar syrup. it's not effective when mixed with just water. does this table look like the one to use? I've found several different versions online.
http://scientificbeekeeping.com/oxalic-acid-treatment-table/

That's the one. Drizzle is a commonly used method of application in UK and Europe. Pretty sure I found some vids on Youtube before but I don't recall the names to search for.
Neill Sayers
Herbhome Bees
USDA Zone 7a

Offline rober

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Re: Oxalic Acid Drizzle
« Reply #11 on: February 13, 2018, 07:15:47 PM »
I made a vaporizer & bought some syringes at a local feed store a few days ago so i'm covered both ways. I've yet to treat with O.A.. it's supposed to be in the 60's tomorrow so I'm going to try both methods & compare the results once I feel confidant that I have the proper recipes.