In message  <[log in to unmask]> Kerry Clark writes:
>    There appears to be a great difference in concentration of active
>    ingredient in the products.... [Apistan/Bayvarol]
 
Hi all,
 
I'm told, on good but not perfect authority,  that  the  treatment
time with Apistan varies between Europe and the US, (6wks EU, 8wks
US?), due to the concentration of  fluvalinate  and/or  the  leach
rate from the carrier plastic.  Can anyone confirm this.  I wonder
if it has any bearing on the discussion.
 
Regards,
--
Gordon Scott          [log in to unmask]   Compuserve 100332,3310
Basingstoke Beekeeper [log in to unmask]