When it all comes to it all.... I don't think I could just stand beside and look at it happen.... and I could never do it myself, that's for sure.
So they have said... I have no idea, roaches can be split in two and still be alive so it's hard to tell... Co2 is one of the best, but thinking about being choked 'till you faint isn't nice either... I don't think any of the "put down"-methods are a good way to die, the best is to grow old and it happen naturally...