My experiences with moving males has been different. I've had no problems moving a male between small groups of 2 or 3 females.

As for using the freon to euthanize...I'm not telling anyone one way or another I'm just saying that knowing whats in those cans is not something I want to subject my reptiles to. *IF* there where trace ammounts in the rodents you use it on even in one years use you may not see side affects, it could take longer. Again I'm not saying its right or wrong do what works for you. Generally I am only freezing pinkies and not anything larger as I to feed strictly pre-killed. I've never had pinkies that lasted much more than a minute in the freezer, its fast and efficient...for me. And I also never have "messes" in the baggies I use.

No offenses ment just stating my experience and oppinions.