On TV in central Iowa circa 1977 they were running a commercial that began with gunfire, and a mouse dodging the gunfire, as splinters flew around him before he darted into a hole in the wall.
Camera panned back, and there's Slim Pickins holding a smoking Peacemaker and saying something along the lines of "Now that I'm gettin' along in years, I have a harder time hittin' them varmints like I used to . . . that's why I use D-CON Mouse Poison."
Funny thing is, at the time we saw the commercial, my Dad, some of our buddies, and I were in a hunting cabin that DID have a mouse problem!
.22 handguns with #12 birdshot worked . . .