Paintball is the sport or activity where individuals use pneumatic devices known as Paintball Markers to propel gelatin shelled paint-filled balls at one another. The paint fill is non-toxic, non-caustic, water-soluble and biodegradable. It rinses out of clothing and off skin with mild soap and water. Originally, Paintball markers were not intended for use as sport and were actually used by forestry workers to mark trees and by cattle farmers to mark their cattle. From historically been used as a tool, it soon occurred to a few individuals to use the paintball markers to shoot the paintballs at each other in a game of capture the flag.