Are Mavrik, Spur and other forms of fluvalinate, or formic acid, commonly
used to treat varroa-infested hives in the U.S.?  I realize these treatments
are not currently approved for use with bees in the U.S., but does the cost
difference between Apistan and these unapproved treatments provide a strong
temptation for commercial beekeepers?
 
How widespread is the use of unapproved treatments?  Would appreciate
learning from any speculation and/or knowledge on this.
 
Public or private E-mail.
 
Thanks,
 
John Caldeira
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John Caldeira
Dallas, Texas