Varroa Count - After OA treatment

[SteveG]

Morning, I've finished Gas Vap treatments 7 days ago. Completed a 3 day sticky white paper under hive test with various results. what would be acceptable count going into winter. I'm told 2 or 3 only..

 

[Erichalfbee]

Morning, I've finished Gas Vap treatments 7 days ago. Completed a 3 day sticky white paper under hive test with various results. what would be acceptable count going into winter. I'm told 2 or 3 only..

That sounds fine.
Next time take a note of the first 24 hour drop

 

[SteveG]

That sounds fine.
Next time take a note of the first 24 hour drop

ok, thanks. your saying 2 or 3 varroa on whole sheet after 24 hours?

 

[Erichalfbee]

ok, thanks. your saying 2 or 3 varroa on whole sheet after 24 hours?

No I meant that if you have a three day count after treatment if 2/3 mites that’s fine. Next time you vape take a 24hour count ( no more) if you multiply that number by five it gives a fair approximation of the total in the colony when you started.

 

[SteveG]

Sorry if Im missing the point, number of varroa acceptable after 24 hours to stop treatment?

 

[Erichalfbee]

Sorry if Im missing the point, number of varroa acceptable after 24 hours to stop treatment?

Just do four treatments and be done with unless you have lots still dropping

 

[SteveG]

Ok thanks. 4 treatments no matter the count.

 

[The Poot in Somerset]

Morning, I've finished Gas Vap treatments 7 days ago. Completed a 3 day sticky white paper under hive test with various results. what would be acceptable count going into winter. I'm told 2 or 3 only..

What were your results Steve and how many times had you treated them?
I think you and Dani may have misunderstood one another.
Four treatments, five days apart should kill 95% of the mites on the bees through a brood cycle.
If you still have a large drop after that you may need to further action.

 

[gmonag]

4 treatments, 5 days apart when capped brood is present.

OA vaping will not kill mites inside the capped brood cells, only the "phoretic" mites (not technically the correct term, I mean those running around the hive and riding/parasitising on bees).
After reproducing in the brood cell, the mother mite and her female offspring emerge with the new bee and stay phoretic for 6-11 days. OA vaping will kill them during this period.

Repeating the treatment 4 tmes at intervals of 5 days will cover the 12 days the brood is capped.

If, after 4 treatments there are still mites dropping, treat once again. The bees may be collecting more mites from collapsing colonies (feral or otherwise).

If there is no capped brood present, 1 treatment should get all of them ('cos they are all phoretic).

 

[Curly green finger's]

4 treatments, 5 days apart when capped brood is present.

OA vaping will not kill mites inside the capped brood cells, only the "phoretic" mites (not technically the correct term, I mean those running around the hive and riding/parasitising on bees).
After reproducing in the brood cell, the mother mite and her female offspring emerge with the new bee and stay phoretic for 6-11 days. OA vaping will kill them during this period.

Repeating the treatment 4 tmes at intervals of 5 days will cover the 12 days the brood is capped.

If, after 4 treatments there are still mites dropping, treat once again. The bees may be collecting more mites from collapsing colonies (feral or otherwise).

If there is no capped brood present, 1 treatment should get all of them ('cos they are all phoretic).

 

[Nige.Coll]

I'll try and find the research paper I had on oxalic sublimation.
From memory when brood is present 3 treatments 5 days apart had an efficacy of around 70 % in that research.

 

[SteveG]

I think the problem for me is the Gas Vap. Not sure i used it correctly and OA reached frames. The strange outcome is my WBCs all had a count of 20 over 3 days, the Nationals all 50+ over 3 days. Giles pointed me to BeeBase the varroa calculator. August, three days, low drone brood. If total count/3 days = 100 = treat asap; total 20 = wait a month then treat.
I've given all hives a further treatment using my old vaporiser. will give a 2nd treatment in 4 days and for Nationals a 3rd treatment. followed by sticky paper test.
I read after the treatments the count should be 2 or 3 drop, confirmed by Dani. I'm thinking next year I'll look at Apivar for summer and OA for winter.

 

[gmonag]

I think the problem for me is the Gas Vap. Not sure i used it correctly and OA reached frames. The strange outcome is my WBCs all had a count of 20 over 3 days...

I wouldn't worry too much about your varroa levels. After my first treatment last month I recorded drops of 160-840 mites! That was after starting the season with zero mites.

 

[Swarm]

I think the problem for me is the Gas Vap. Not sure i used it correctly and OA reached frames. The strange outcome is my WBCs all had a count of 20 over 3 days, the Nationals all 50+ over 3 days. Giles pointed me to BeeBase the varroa calculator. August, three days, low drone brood. If total count/3 days = 100 = treat asap; total 20 = wait a month then treat.
I've given all hives a further treatment using my old vaporiser. will give a 2nd treatment in 4 days and for Nationals a 3rd treatment. followed by sticky paper test.
I read after the treatments the count should be 2 or 3 drop, confirmed by Dani. I'm thinking next year I'll look at Apivar for summer and OA for winter.

As others have said, I found it a PITA doing multiple visits.