George,

You would have needed counts of varroa falling before and during the
Apiguard treatment to make an assessment of the efficacy. A second acaricide
such as Apistan or another reliable product could then be used after the
Apiguard treatment is finished, to check for additional mite fall.

If you haven't made mite counts before and during the Apiguard treatment
then you can only get a very rough idea of the mite infestation today.

In place of a second acaricide treatment you could try an ether roll test of
adult bees or drone uncapping to check for residual mites. These methods may
give an impression of the remaining infestation.

The Apiguard should have given reasonable control of varroa mites so you
should not expect to see too many in the colony.

Best regards,


Max


PS: What is the active ingredient in Varachet and how is it used?

Dr Max Watkins
Vita (Europe) Limited
21/23 Wote Street
Basingstoke
Hampshire RG21 7NE
UK

tel. +44 (0)1256 473177
fax  +44 (0)1256 473179
e-mail: [log in to unmask]

web: http://www.vita-europe.com