Spongy Moth Quarantine and Regulations

*A new common name for Lymantria dispar, spongy moth, replaced the prior name of this insect, gypsy moth, in 2022. Thank you for your patience and understanding as we transition through the name change process.​ For more information, visit the Entomological Society of America website.​​

​The spongy moth* (formerly known as gypsy moth) quarantine covers 52​ of Wisconsin's 72 counties, as well as many other parts of the U.S. Under quarantine regulations, wood product and ou​tdoor household items must be inspected or certified before moving them from quarantined areas to non-quarantined areas. Quarantine regulations apply to both businesses and private citizens.​​

Spongy moth​ egg masses are a particular concern because they are often hidden and can overwinter in cold climates. We quarantine to limit the spread of spo​ngy moth to new, uninfested areas. 

The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) works with the U.S. Department of Agriculture Animal and Plant Health Inspection Service to enforce the quarantine.

Items Covered by the Quarantine

  • ​Outdoor household articles such as patio furniture​

  • Firewood, whether for sale or consumer use​

  • Logs, posts, pulpwood, bark and bark products

  • Nursery stock​

  • Cut Christmas trees

  • Mobile homes and associated items