Gypsy Moth Aerial Treatments

Post Date:05/05/2017 10:51 AM

The Wisconsin Gypsy Moth Slow the Spread Program is making plans to apply aerial treatments for gypsy moths in your county this year. Treatment applications typically start in May and last until late July or early August. However, it is possible treatments can start as early as April. Unfortunately, we cannot give you definite dates at this time since applications depend on weather conditions and gypsy moth development.

Your county includes at least one treatment site. We are providing you information about our plans in case you receive calls from the public about our activities. We also will share this information with municipal officials if a municipality is in a treatment area. An informational postcard will be mailed to people living in and around the treatment sites in late April.

We enclosed maps of all the treatment sites in your county and information on the type of product(s) we will be using. The products we use are Bacillus thuringiensis sub sp. kurstaki (Btk) and an organic mating disruption. We have also enclosed general information about the gypsy moth and our aerial treatment operations.

Eau Claire County Map #1
Eau Claire County Map #2

Please note our toll-free number: 1-800-642-6684, and our e-mail, Feel free to refer people to call or e-mail us if they have any questions. Additionally, our toll-free line carries a recorded message about our daily treatment plans once they begin.

Throughout the season, we will send an e-mail notification about our treatment plans and progress to the local media and those who are interested in receiving information. We will also send you an e-mail of each treatment date, informing you of our progress so you will know when we begin and finish. If you wish not to receive these e-mails, let us know.

Please feel free to share this information with other officials and the public.

If you have questions, you can call Christopher Foelker at (608)-224-4581 or e-mail You also can visit the website for more information.

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