That's what it sounds like, anyway. We have zapped 5 rats so far with the amazing Leboffe Rat Zapper. When they're up there scurrying around, it sounds like they're kicking a ball to each other. Fun for them, but not for us, keeps us awake and we don't know if they're carrying disease as well. We still have at least one of them up there, who we think is not taking the bait since he's seen all his buddies get electrocuted on the zap mat.