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:

2025 Application Schedule for Spongy Moth Control

• Location: Within City of Wood Dale boundaries
• Season: May 1^st – June 30^th, 2025
• Larvicide Time of Application: Between dawn to 9am
• Purpose: Spongy Moth Control

Larvicide Products Being Used (Spongy Moth)

1. Foray 48B Biological Insecticide Flowabel concentrate (OMRI-listed)

• 12.65% Bacillus thuringiensis, subsp. kurstaki, strain ABTS-351, fermentation solids, spores and insecticidal toxins
• Labeled Application Rate: Apply at a rate of 21 to 107 fluid ounces per acre

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