Hi:
As a method of mite control through drone trapping, you may wish to contact
Doug McRory, Ontario Provincial apiarist.  [log in to unmask]  He has
recently written an article in the Ontario Beekeepers' Association(OBA)
newsletter "The Sting" vol.17 no.3 p.18. Doug maybe able to electronically
transfer a copy of the article to you? The OBA,
http://www.tcc.on.ca/~ontbee/ , as yet does not have "The Sting" online.
Doug's method basically is to place two hives side by side, super both with
a single q excl.over the centre of both boxes, this leaves a space on either
side for the exchange of frames. Doug's article is in more detail.
If you have not already, try  http://www.beeworks.com , for drone fdn.
Questions, please contact me.
Joys in beekeeping,
Keith