Are no-kill traps an option?

We had a mouse problem last year and I was afraid my daughter would get her fingers snapped in a trap, so I purchased some “humane” traps. They’re essentially a little mouse-sized cage that’s on a little see-saw. The mouse walks in for the bait at the back and the door firmly comes closed once he passes the center of gravity.

It worked great except for one thing: My father-in-law didn’t quite get the concept of “no kill” traps, and so would take the sprung traps and submerge them in a sink full of water. 🙁