Naah, the battery-powered zapper is too low-tech.
I want the moving-target-indicator radar/lidar paticle-beam slug zapper!
Or trained attack geese.
Like when I proposed cattle prods, at work, to motivate the newer software engineers to follow our code standards.
I was corrected.
The MODERN method uses AUTOMATED shock collars with built-in TASERS. .
As my boss said: "Ya hit a guy with a cattle prod, he gets right back up. A Taser, now - he goes down and stays down. He won't forget that soon!"