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Chemical Control Agents Used underneath the Gypsy Moth The gypsy moth (Lymantria dispar) is a highly disruptive species which can, and has played a distinctive role in the lives of many organisms. Included in those organisms are many deciduous trees and trees, wildlife species that share the exact same surroundings, and even humans. The gypsy moth destroys the beauty of woodlands via defoliation, transforms ecosystems and wildlife habitats, also interrupts our lives. It should thus come as no surprise that the U.S. Department of Agriculture and many different agencies have taken huge measures to help minimize inhabitants of this little, yet insistent species. In an effort to control these overwhelming populations, five chemical control agents are used to curb and/or eradicate the gypsy moth. Following, is a discussion of every compound and their potentially hazardous effects on individuals. The very first chemical control agent is Bacillus thuringiensis var. Kurstaki (B.t.k.); a germs isolated from diseased silk worms and flour moths. The effectiveness of B.t.k. varies among insects and readily destroys lepidopteran larvae within approximately one hour of ingestion. Over 1 million pounds of B.t.k. is implemented annually at the U.S., primarily via aerial spraying, but also by ground spraying. It does not persist long in the environment (dropping its action by 50% over 1-3 times), hasn't been seen to replicate from gypsy moth predators, and does not accumulate in the land. There appears to be a low amount of concern as to human B.t.k. exposure, though B.t.k. formulations have caused skin, eye, and respiratory tract irritations, particularly in ground workers. Some claims reveal that a vast majority of these workers weren't equipped with.