I think those glue / stick traps are inhumane for any animal. I moved to catch and release eventually but if you think you must kill then do so in a way that minimizes suffering. For mice the "snap" traps should generally kill quickly by snapping the neck or spine and seem much more humane than stick traps.
I bought a glue trap once and caught a rat. The poor thing was whining for hours until I finally had to snap it's neck by hand. Never again. I don't know why these things exist
I highly doubt it. They're the kind of animal that would need a very large enclosure and lots of fellow bats for good quality of life. They're not as mobile as birds when not flying, and they're very social animals so they wouldn't do well alone. I don't think most birds should be kept as pets tbh but bats even less so. And that's not even considering the risk of disease.
Glue traps are terrible, but there's an easy way to get something free from them without hurting it: Hang the glue trap upside down over a container or bucket or something. Just let gravity slowly pull the critter free. They'll be able to clean themselves after that.
If you try to pull something out, the glue stiffens and pulls back more as the glue is a non-newtonian fluid. This will cause damage and hurt the creature. But, allowing gravity to do the work for you takes just a moment and leaves minimal glue behind on whatever got stuck. Then, you can set them free without worry. The little bit of residual glue gets even easier for them to clean when it gets a little dust in it.
I mean you can dissolve the glue pretty easily with vegetable oil. The problem is that the bat will be trying to pull itself out of the trap the whole time it's stuck before you can free it and will injure itself in the process because they are very fragile. It even says in the post that they need time to heal afterwards.
I've freed mice, lizards, a few other things, even a baby rattlesnake this way. Never my own traps. But, yeah... a lot of times the vegetable oil thing just isn't an option. And, it seems much more difficult and traumatic for the animal. They freak out being handled by humans, as they should, honestly.