As of Friday night, I’d caught all but one of the escaped mice again. I moved them from the large bin in to a 5 gallon bucket and placed a screen and weight over it while I finished up evening chores and dinner. Then, I forgot about them. I planned for this possibility by leaving a handful of the corn scratch in the bottom of the bucket, so they were at least going to eat well.
When I went out to get the bucket in the morning, the lid had been disturbed and all 5 mice were gone. The bucket was still standing, so it seems that nature took its course. I suspect the gray cat that I keep shooing away found the bucket, and just as the mice who found the scratch in a bucket, couldn’t resist the easy meal.