City Of Zion
Public Works Department
May 9, 2011
Last fall the City of Zion completed a survey of trees in your neighborhood (see attached map) and has identified continued signs of Gypsy Moth infestation. Gypsy Moth’s are a nuisance and require eradication. In the past Zion and many other northern Illinois communities have successfully controlled Gypsy Moth infestations by spraying BTK (bacillus thuringiencis var. kurstaki) over infested areas.
The City has again contracted Hendrickson Flying Service, Inc. to conduct aerial spraying of BTK . BTK is a naturally occurring bacteria which attacks the larval stage of the Gypsy Moth. As a naturally occurring bacteria, it is not a pesticide or man-made chemical.
The first spraying will occur during the week of May 24th, in the early morning to minimize the inconvenience on residents other than the helicopter noise. A second spray application will also occur about two weeks later.
Gypsy Moth infestations, when left untreated, can lead to significant defoliation of the infested areas. It is extremely important to eradicate Gypsy Moth caterpillars in the spring when they begin to feed upon deciduous (leafed) trees. The Department of Public Works is available to answer your questions regarding this spraying. They can be reached by calling 847-746-4050.
Ron Colangelo, Director
Department of Public Works