[QGolden]

I have used bait blocks, most of the time the mice seem to crawl off to die. But a few years ago I had one die in the heater fan on my '67 Chevy. He froze in there and thawed out during my first ride of the following spring. It was not good, and a LOT of work to clean him out. I had to take it apart twice to get the smell out, the second time I had to paint the inside of the heater box. Now I set the old spring type under the seats, so I know where they expire. I set them in the fall, once we get a hard frost or two the problem seems to go away.