Let it suffocate for a bit. Oh that sounds mean but trust me. I caught one in a trap a fw weeks ago and carried him to the toilet in the trap. Opened the trap to dump him and he was alive. He swam in the toilet. I flushed. Mousie go bye bye. So just let him be for a while! I would look...
Get those plastic snap traps. We have them all over! Last night the cat brought me a mouse in a snap trap. "Good evening sunshine ... have a mouse." She went into the basement to get it and dropped it by my bedroom door. 3 am mouse flushing ... the new Olympic sport! Back to the trap...