In Japan, convenience stores across the nation carry small orange orbs called bohan yo kara boru (anticrime color balls).
They’re paintballs — plastic spheres filled with brightly colored liquid pigment kept on hand in case of a stickup or a shoplifting crime. The idea is to lob one after a robber and mark him to improve the chance of an arrest.
To increase the chances of hitting a moving target they aim at the perp's feet causing the balls to shatter on impact and release their contents in a radius as wide as 30 feet.
I say, if you can, hit them in the head!
In the old days stores and banks had armed guards sometimes hidden in sniper positions to handle such situations.
Those balls are just too common sense for here in the States.