I would get a cat if it was a Certified Chipmunk Killer
Our big cat has snuck into the house more than once with a chipmunk. He doesn't seem to have a killer instinct.
Thankfully, we have a second cat who does. She is mostly an indoor cat. She catches the critters the other mostly-outdoor cat drags in.
Cats are good critters. I've met few that have not befriended me.
