Mosquitoes
The City of Warrenville does not have a mosquito abatement program. DuPage County and DuPage Forest Preserve District typically monitor the mosquito population with an emphasis on the Culex mosquito, carrier of the West Nile Virus. Both entities have placed monitoring traps throughout the County to pinpoint hot spots at high risk for WNV activity. Once identified, those spots will be targeted for larvicide treatments.

Beginning every May 1, DuPage County collects and tests dead birds for WNV. Residents who discover dead birds during the summer months can contact the nearest public health center located in Wheaton at 630/682-7560 or visit their website. Residents may also dispose of a dead bird by double bagging it and putting it with their regular trash.

Mosquito Abatement

Gypsy Moth
Unfortunately, the Gypsy Moth has found its way into Warrenville. The Illinois Department of Agriculture (IDA) has sprayed for Gypsy Moths over the last few years. About 200 acres of infested sites have been treated with an application of BTK, a naturally occurring bacteria used by gardeners as an environmentally friendly alternative to chemical pesticides. About 600 acres in Warrenville were flaked with Disrupt II Pheromone, a synthetic hormone that helps reduce mating among the moths. For more information and to view treatment maps, contact the University of Illinois Extension at 773/233-0476. The IDA also offers a toll free number, 1-866-296-MOTH(6684), if a resident believes they have a gypsy moth infestation. Otherwise report a possible moth infestation to the Department of Public Works for identification at 630/393-9050.

Emerald Ash Borer
Although there have been no reports of this insect in Warrenville, the Illinois Department of Agriculture is preparing municipalities for infestation. The emerald ash borer is a slender, elongated, bright green beetle. Although chemical and biological controls are being researched, more aggressive containment and eradication efforts are necessary for new outbreaks. The borer kills trees relatively quickly and affects white, green, black, pumpkin, and several horticultural varieties of ash. Within several weeks, larval feeding creates S-shaped galleries in the tree’s inner bark that wind back and forth. The tree quickly declines in the second growing season and is usually dead by the third. For more information, including insecticide options for protecting ash trees and homeowner EAB treatment guide as well as a schedule for EAB homeowner management seminars, contact the Illinois Department of Agriculture at (217) 782-2172 or visit their website at www.agr.state.il.us/eab/index.php. More information can be found at www.emeraldashborer.info or by calling the national EAB hotline at (866) EAB-4512.

EAB is extremely difficult to detect in its early stages of infestation. Therefore, it is important to have a trained arborist confirm infestation. Since the City of Warrenville does not have one on staff, private property owners can contact the local University of Illinois Extension office in Naperville who can provide a list of certified arborists to contact. Their contact information is listed below.

1100 E. Warrenville Road, Suite 170
Naperville, IL 60563
Phone: 630-955-1123
FAX: 630-955-1180
http://web.extension.illinois.edu/dupage/

Asian Longhorned Beetle
In July 1998, Asian Longhorned Beetles were discovered in the City of Chicago. These beetles cause considerable damage to trees. At present, they cannot be controlled by chemical means and have not natural enemies. Infestation usually results in the tree being cut down. Rapid response is critical. Residents should report a possible infestation to the Department of Public Works for identification at 630/393-9050.