BA, you might consider setting a trap. There's a guy on YouTube, Shawn Woods, who tests mouse and rat traps (he has thousands) but I think some of them can be applied to chipmunks as well. I'm thinking about a trap called the Dizzy Dunker. It can be used as a kill or a live catch trap. You need to supple your own bucket. It consists of a ramp (so the critter can climb up) and a dunking device that fits on top of the bucket. You bait the wheel of the dunker, the critter climbs up and steps on the wheel to get the bait and then gets dunked to the bottom of the bucket. You can have water in the bucket for a kill trap or no water for a live catch trap.
You can get the device on Amazon, he has a link to it on his channel.
