Lessons learned. No pictures of the rodents, as I do not want to make these bastards famous.
Chipmunks have personality. They hear you come outside for your morning meander around the grounds and run in front of you, chirping, or whatever you call that exclamation they emit when they think you are trespassing in their territory. Sometimes, Master Chipmunk will stop, stand up, look at you and they run away to a place he/she can't be found. Chirping, of course. Pretty sure I know how to say "ha ha fuck you" in chipmunkese.
Back in the warm, balmy spring, around April, I found three chipmunk holes. Two, I was able to flood the holes and have the sand under the concrete cave them in and repack the holes with more dirt. That worked, no holes in those two locations. The third hole comes out from under the driveway. It's bigger, and well supported. Around that time, a large chipmunk mysteriously died. Again, walk outside to get my morning dose of garden and didn't even get a step out of the door. Dead chipmunk, dead in the middle of my front sidewalk, a foot from the front porch. It was staring at me. Dead eyes. I walked back into my house, not breaking eye contact as I didn't want this to be some odd trick where that son of a bitch runs up into my house as I step back in. Later that day, having avoided my front door and deeply hoping the mail person had no package to leave on the porch, I asked someone else to take care of the problem. I love you, A.
After the not-unfortunate demise of Master/Mistress Chipmunk, the body of it was buried in that last remaining chipmunk hole. If you would prefer to think we carefully buried the chipmunk in its own hole out of kindness and respect, well, you are certainly free to think that. A weed of some sort was growing nearby so we just allowed the weed to grow in that space, filling the area quickly, soon becoming a bush. It was a prettier weed but last week, we decided a striking pink Asiatic lily would look better in that area, as well the weed-bush was enormous and starting to grow onto the sidewalk. I advocated for placing the lily next to the weed and trimming the weed-bush. I had seen nary a chipunk since The Incident and was convinced the weed bush's roots were filling in the hole and preventing more lil' sumbitches from making another entrance. My better half insisted the weed bush needed to be removed. So he did that.
*angry face* I need an angry face I Told you So picture. Noted.
Anyway, a couple of days later a chipunk runs right in front of me and into the new hole dug where the weed bush was. I fill the hole with dirt. A few hours later, the hole is back and chipunk is chirping at my invasion into his/her yard. I plug the hole with about 10 landscape rocks. Next morning? Rocks pushed aside to make room for a new hole. I flooded it, put rocks back and put a large heavy rock, about the size of a football, over that space. Next couple of days, sumbitch makes it a point to chirp at me before running off to a hole I still haven't found. On the third day after Big Rock Placement, a new hole is dug about a foot away from the original. Also, my garlic is chewed down, along with my begonia and a few other flowers. Six begonia burbs planted and I only have one chewed down plant. Chipunk is still running and chirping at me, whenever I'm outside.
Later this day, Chipunk runs up a gutter. I text my SO to grab the trap and I make sure to make my presence known so he/she stays in the gutter. We grabbed our live rodent trap (useless until now) and place it around the end of the gutter and waited. He/she was later relocated very far away from our yard. No more chirping.
We still have another hole to find but the damage from chipunks has ceased and I haven't seen another one yet.
Helpful Hints from this story: Chipmunks can move small rocks. If you have a rooty plant covering a chipunk hole, might want to leave it. The weed had a strong scent if snipped, so that may have been a deterrent as well. Small chipmunks can't crawl vertically up a gutter, so that's a great trapping opportunity.