I set a mouse trap in the factory and actually caught one ㄷㄷ

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I set it this morning, and when I came back from going out, it actually caught one ㅋㅋㅋㅋㅋ I came back to the factory around 3 PM and found it trapped ㄷ
But I felt a bit bad about killing it, so I gave it some food for now
I'm thinking about how to handle this when I go back tomorrow
Is it right to kill it?
Or is it right to let it go?
I'm seriously torn. Believe it or not, I'm actually a warm-hearted guy.