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Gypsy moth hotline:
1-800-642-MOTH
For more information about the content on this website, please contact Andrea Diss-Torrance.
Site content © 2001-2009 Wisconsin Department of Natural Resources. All rights reserved.
Site design © 2001-2009 Board of Regents of the University of Wisconsin System, doing business as the Division of Cooperative Extension of the University of Wisconsin-Extension. All rights reserved. |
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Each year, gypsy moth caterpillars defoliate thousands of acres of hardwood forests throughout northeastern United States, including Wisconsin. This site offers tips on how to limit damage to your trees and available assistance programs.
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Spray or scrape egg masses
Gypsy moth eggs are tough! They can survive
temperatures as low as –20°F.
You can continue to spray egg masses with Golden
Pest Spray Oil when the temperature is over 40°F. The oil kills the
eggs, reducing the population of gypsy moth next spring. You can also
scrape egg masses into a cup and either microwave them on high for 2 minutes
or cover them with soapy water for 2 days. You may then discard eggs in
the trash. Don’t just scrape eggs onto the ground, they will survive
to hatch next spring!
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