The emerald ash borer (EAB) is a small (1/2 inch long, 1/8 inch wide) metallic green beetle native to Asia. The first reported case of EAB in the United States was in Michigan in 2002. Since then, EAB has been detected in Ohio, Indiana, Virginia, Maryland, Illinois, and Ontario, Canada. In 2013, the Village of Willowbrook received official notice from the Illinois Department of Agriculture that an EAB presence had been discovered and documented. To date, EAB is responsible for the destruction of more than 20 million ash trees.