thymol treatment

[paulgid]

after thymol treatment how long after are varroa mites dying?
as monitoring drops after could give a false reading

 

[BBG]

after thymol treatment how long after are varroa mites dying?
as monitoring drops after could give a false reading

4 weeks with second run of treatment but more specific advice will be along shortly

 

[Finman]

.
How long was your treatment? Was it 3 weeks or...

 

[paulgid]

It was four weeks

 

[Finman]

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You have done like it ought to be.

Thymol kills well if the hive has no brood, but who knows how it worked.

But to be sure, give a oxalic acid trickling in December.

You need only 10 living mites after winter and you have next late summer too much mites.
I think that you do not find them with calculating.

Researches promise to thymol 95% deadrate. Out of 1000 mites it is 50.
Then again Oxalic kills 95%. It makes 2,5 mites alive after winter. That is the idea of oxalic.


80% dead rate out of 1000 mites is 200 alive. Next brooding month 400, then 800 and then over critical level in 3 months.

 

[Ruary]

It was four weeks

Was all the gel removed in the four weeks?
If not your treatment is too short, in general, chemicals which do not kill the mite in brood cells (and as Finman says this includes thymol) should remain in the hive for two full cycles in order to attempt to get the emerging mites.
Ryary

 

[drstitson]

"as monitoring drops after could give a false reading"

monitoring board comes out when no longer treating. so long as drop reduced by end of the full treatment cycle then best you can do is wait for the winter oxalic treatment.

 

[Finman]

Was all the gel removed in the four weeks?
If not your treatment is too short, in general, chemicals which do not kill the mite in brood cells (and as Finman says this includes thymol) should remain in the hive for two full cycles in order to attempt to get the emerging mites.
Ryary

in Finland the system is that when you feed for winter the bees, you put thymol strips into the hive.

3 weeks is enough in practice.

The brood is open one week and closed 2 weeks. So it covers the the capped stage when bees emerge.

This meaning is to kill mites that they do not violate this autumn the wintering brood.

The oxalic acid is ment to hit down the mites that they do not multiply too much before next Autumn.

Another choice is to use formic acid instead of thymol.

.

 

[Ruary]

in Finland the system is that when you feed for winter the bees, you put thymol strips into the hive.

3 weeks is enough in practice.

How are these strips made?
Ruary

 

[Finman]

How are these strips made?
Ruary

It is a product secret. They are carefully tested before selling. The producer has 1000 hives.
'
Another company made its own cheap version strips and they did not work. The concentration was too low. It became a big question here this Autumn.

 

[itma]

after thymol treatment how long after are varroa mites dying?
as monitoring drops after could give a false reading

Good question, but since the death rate would be the death rate of the reduced population, it shouldn't be very misleading.
(It could be a large error %, but as a % of what should be a small number, it ought to still be a decent indication of a much-reduced residual population.)


Added: I have seen that even sugar dusting increases the knock-down rates in the few days after the day of dusting - even the result of that has a "tail".

 

[Finman]

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I treated hives in Spring with oxalic. The dead outs of mites were hundreds even if I had treated the hives in winter - Help somebody!!!

Then I handled empty frames and I notices that tens of mites dropped from them.Those mites had died in November but they were still in Aprill in the comb cells.

 

[paulgid]

Thanks for all replies .

 

[Ruary]

It is a product secret. They are carefully tested before selling. The producer has 1000 hives.
'
Another company made its own cheap version strips and they did not work. The concentration was too low. It became a big question here this Autumn.

can you post a link to the company's web page?

 

[Finman]

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It is www.mesimestari.fi.

Take English flag
varroa control
thymol pad



it means nectar master

In Estonia language mesi is honey

 

[BBG]

.
It is www.mesimestari.fi.

Take English flag
varroa control
thymol pad



it means nectar master

In Estonia language mesi is honey

Hivemaker's thymol recipe does the same surely?