If you have a decent sized collection (aprox. 20 breeders or so), I would pick one room in the house and use/get a small inexpensive window unit AC. to keep it cold in there (provided you can spare a room). I know the challenge - I use to live in Leesville,LA. (about an hour north of lake Charles), for about three years. When I was a lot,lot younger, many years ago, I tried the refigerator method - doesn't work too good at all (I actually had a couple of snakes die that way). So don't use the fridge (circulation sucks bacteria poor temperature & humidity control).
Zee
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"I am an expert on everything, but I know so little and have so much to learn!" -Carsten "Zee" Zoldy-