I don't care about the humane factor of trapping and killing mice. You go into my apartment, you die, it's as simple as that. The other thing is that the doorman just gave me a couple of glue traps, and I can't argue with free stuff. But I do care about them squeaking as they die, as well as the fact that they generally look gross just being trapped there. The hardware store near me has disposable traps that you bait with peanut butter or cheese in the front and it indicates when it's got one. I think I'll buy a couple of them for the future, they're a little over $6 for a pack of two.
This is the first time I've seen a mouse in my apartment, so hopefully they won't need to be used.