>.What is the response curve to Apistan?  Anyone know?  So far, it does
not seem to be doing anything and I put it in five days ago.

when varroa are not resistant to fluvalinate the response is fast. usually 
24 to 48  hours. I have seen sticky boards with a higher amount of varroa 
than I care to count in a short period.

My guess is your varroa load is low rather than fluvalinate resistant varroa 
but Delaplane found in Georgia mite load actually increased while apistan 
was used when the mites were fluvalinate resistant.

My personal testing has found you can return to apistan after a period ( 
five years?) and get a decent mite kill.

bob 

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html

Guidelines for posting to BEE-L can be found at:
http://honeybeeworld.com/bee-l/guidelines.htm