Peter Borst

>I would be more persuaded that coumaphos is not used in UK if we could see 
>some data on residues. It would be a bit surprising not to find it, as it 
>is found just about everywhere else. There are a quarter of a million hives 
>in the UK, and I doubt that all of those are pristine.

Of course you are right - should perhaps have added 'legally'.  Having said 
that, I believe that our NBU used it under a special licence when pyrethroid 
resistant mites were first found.

Best wishes

Peter 

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