In message <[log in to unmask]>, Aaron Morris
<[log in to unmask]> writes
>Bill Truesdell asks about a concoction of different oils of essence (a more
>correct name for essential oils).
>
>> 100 gram bottle of thymol, Add 1/2 ounce of menthol and 1/2 ounce of
>> champhor...
>Aaron Morris - thinking like a mathematician!

The product Apilife licensed in Italy for treatment of Varroa uses
thymol, camphor, eucaplytus and menthol.  The Devon Apicultural Research
Group in the UK did trials with this in 1996 and achieved knock down
rates of above 90% for some designs of hive.  The results are available
at:

www.geocities.com/CapeCanaveral/Lab/2352/

I achieved some good results but only in a small scale uncontrolled
trial.  The apilife application method is very quick and easy, but needs
two visits per hive.

I believe that there is discussion about Apilife in the Archives

regards
--
Mike Rowbottom

HARROGATE
UK