Spongy moth infestations are not only a nuisance to residents, but uncontrolled populations can be detrimental to the health of wooded areas. Oaks usually suffer more attacks than other tree species. Deciduous trees in good condition, prior to infestation can withstand one or two consecutive years of defoliation before decline. Evergreens can suffer decline after only one year.

City of Wood Dale residents should be aware of new state regulations regarding pesticide applications on public rights-of-way that took effect January 1, 2025. Under Public Act 103-0976 (The Pesticide Application on Rights-of-Way Notification Act), we are implementing enhanced notification procedures to keep our community informed about pesticide applications.  Click here to learn more.

As of January 1, 2025, City of Wood Dale must provide written notice at least 24 hours before any pesticide application to public rights-of-way, including:

2026 Application Schedule for Spongy Moth Control

• Location: Within City of Wood Dale Boundaries
• Season: May 2026- June 2026
• Larvicide Time of Application: Between dawn to 9am 
• Purpose: Spongy Moth Control

*Please Note: This schedule remains tentative and is strictly pending favorable weather conditions as well as clearance to enter O'Hare airspace.  Call Public Works at (630) 350-3530 or email us at pwadmin@wooddale.com for the latest updates. 

These EPA-registered larvicides and adulticides can be safely applied in residential areas. Residents may remain outside during application, as there are no special safety precautions required according to the product labels.

Please note that in certain emergency situations, such as disease threats or natural disaster recovery efforts, advance notice requirements may be waived. This includes responses to:

• Disease-causing agents in mosquito populations
• Mosquito-borne diseases affecting humans or animals
• Natural disaster recovery situations

For questions or concerns: Clarke Customer Care: 1-800-942-2555

To report pesticide misuse, contact the IL Dept of Agriculture, Bureau of Environmental Programs

• Phone: (800) 641-3934 or (217) 785-2427
• Website: https://agr.illinois.gov/pesticides.html

The City recognizes the residents need to receive appropriate notification of Spongy Moth Sprayings in the future. Clarke now offers direct notifications to residents regarding Spongy Moth Spraying specifically by completing the form here. 

USDA Map of Spongy Moth Active Federal Quarantine Area

Additional Information Regarding Spongy Moths in Illinois

Illinois Department of Agriculture

• Safety Data Sheet 
• Technical Manual