your wife does realize the Frozen rodents were once alive right? why does it matter if they are put down by the snake vs. a co2 chamber?

Dead is dead, no matter how it happens!
I feel that it is just inhumane to the prey. I have no problem with nature in the raw but this is captivity. I would rather be put down with Co2 than be thrown to a painful and brutal death. It is just as easy to feed f/t as it is to feed live. Any excuse like, "my snake doesn't take f/t," is a cop out. I would rather put in the extra effort to ensure safety for my animals, and know that I'm not putting any animal through extreme pain before death.