Hi Rebekah,
   I think this has come up before, but here's a link to their study from
summer 2015.  It took me a couple of reads because of the language.  40-47C
(104-117F) seems pretty hot to me. You might want to go back and look at
the discussion on this list concerning a study of the effects of
temperature spikes during shipping on queen fertility.  I would be
surprised if the thermosolar therapy didn't cause massive brood mortality
and queen infertility.  They don't really address those issues in the study
and do some further handwaving about the results they got. They relied
entirely on mite fall data and took no baseline counts among other things.
I'm not convinced.  But part of crowdfunding is getting
money to do further studies.
   Interesting though, that all beekeepers in the Czech Republic are
required to treat their bees with amitraz every winter.
http://thermosolarhive.com/wp-content/uploads/2016/05/
thermotherapy_2015_EN.pdf
Cheers,
Kristina Williams
Boulder, CO

             ***********************************************
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