Here is something different. Herbicide Ballistic Technology, or HBT as it is known, uses rapid fire paintball guns to fire herbicide at an invasive plant species.
Below are two videos of trials conducted to combat a variety of invasive species. The ammunition is a gel cap, exactly like a paintball except the capsule is filled with a specially formulated herbicide.
Dr. James Leary, CTAHR Invasive Weed Specialist, introduces HBT to control invasive weeds in Hawaii.