On October 28, 1925, Slaughterback singlehandedly killed 140 rattlesnakes.[2] Slaughterback and her son Ernie were on horseback headed to a lake near her farm. Hunters had been there the day before, and she was hoping to find harvested ducks left behind. However, she instead found over 100 migrating rattlesnakes. She shot the snakes until she ran out of ammunition for her .22 caliber Remington rifle, at which point she grabbed a nearby sign (allegedly, it said “No Hunting”) and bludgeoned the remaining snakes to death.