Spongy moth treatments proposed in Aitkin, St. Louis, Carlton, Pine counties

Sixteen areas in Aitkin, Carlton, Pine and St. Louis counties are proposed for treatment to slow the spread of the invasive spongy moth.

The moth poses a significant threat to the economy, environment and human health, according to the Minnesota Department of Agriculture and federal partners. Because the caterpillars feed on over 300 tree species, including the state’s most common trees, they can cause billions of dollars in property damage and defoliate millions of acres.

A virtual informational public meeting will be 6-7 p.m. Tuesday, March 24. Find more information and register at the ag department's website. An interactive map of proposed spongy moth management activities is also available there.

Management would occur by using a mating disruption product SPLAT GM-O, or Specialized Pheromone and Lure Application Technology Gypsy Moth-Organic. This is a pheromone that stops male moths from finding females, preventing mating. It is applied via low-flying aircraft to the tree canopies.

The ag department said the spray is harmless to humans and animals, and all the ingredients are listed by the Environmental Protection Agency as safe.

Applications could happen early in the mornings, with planes often flying in the area for several hours. Northern Minnesota spraying would likely take place in mid-July.

People can also sign up for text or email alerts to stay up to date on the management proposal by visiting the MDA website. For questions, comments, or concerns, email reportapest@state.mn.us or call 1-888-545-6684.