You likely have much more experience than me. I grew up in the sticks. We had cats, but not specifically for keeping mice out of a barn. They were pets. The c

You likely have much more experience than me. I grew up in the sticks. We had cats, but not specifically for keeping mice out of a barn. They were pets. The character of the cat seems to be the key thing. One cat would spend all day hunting. She was a killing machine. She had no need for food, just really liked killing things. Also, a pretty sweet cat, unless you were carrying milk. Then she'd bite your ankle. Perhaps she was just an outlier. But, uh, if you believe in the 10x programmer, trust me. There are also 10x hunter cats.