So, if I have your attention have a macro question for y'all

This is a Polish contest of Macro Arena 2010 there is a few unbelievable shot !!!
http://www.cyberfoto.pl/macroarena/110684-macroarena-zdjecie-roku-2010-a.htmMy question is simple how they doing that, well i understand most of the macro shooting but also I heard some people taking "model" to the studio.
Now since little bug, fly, spider etc... are in studio,(here is disturbing part) pro's putting them in to the freezer for few minutes? And then taking a pictures is that have any sense to you?
I'm afraid that when I put bug in the freezer:
a ) my wife will kill me
b ) as soon i will take it out its start melting
c ) I can eat that shit if I'm drunk

Let me know how you dealing with macro shooting in studio/outside.