Bill Ruzicka wrote:

>The only known and verified substances that will kill trachea are menthol,
>formic acid and from pesticides amitraz and only when it is used in a
>fumigation method.  All other claims are here say or may bees lacking in
>scientific documentation.
>
>
Just a cursory google search has many more methods.
As far as killing Tracheal or Varroa, I think control is a better word.
Lots of things kill the mites, even Apistan and cumophose kill resistant
mites, just not enough.

Even the ones cited do not kill all the mites but do get up into the 90%
range so you have them under control.

Grease patties do not kill but do control and is well documented.

Here are a couple of sites that give additional methods of documented
control.

http://www.dave-cushman.net/bee/acarinetreatment.html

http://www.honeycouncil.ca/users/folder.asp?FolderID=1142

http://www.wvu.edu/~agexten/varroa2.htm

Bill Truesdell
Bath, Maine

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