In a message dated 18/02/03 05:03:48 GMT Standard Time,
[log in to unmask] writes:

<< I wrote twice to the manufacturers to get copies of the "tests" but they
 did not reply. Has anyone else seen reports of these tests? I have been
 told that no new Section 18 exemptions can be issued in states where
 coumaphos is still effective. >>

I have seen the results of the tests in the manufacturer's printed matter but
don't have it to hand.  From memory the tests were conducted in a number of
countries with varying efficiency between the low and the high 90s in %
terms.  I used it last autumn to give a break from Bayvarol (artificial
pyrethroid) and checking trays under varroa floors in my home apiary the last
few weeks there is a virtually nil drop whereas one untreated hive (a swarm
treated with Bayvarol last May but nothing since) shows a drop averaging
between 1 and 2 per day.

It is a long time since I removed the Apiguard but I still get a whiff of
thymol when conditions are right.

Chris (UK)

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