The Minnesota Department of Agriculture will be conducting a second treatment Tuesday to eradicate gypsy moth infestations in four areas in or near Duluth, Cloquet, Ely and Two Harbors.

To eradicate the moths before they spread, officials will conduct aerial applications of Bacillus thuringiensis var.kurstaki (Btk) over each of the areas, said a news release from the Department of Agriculture.

For the gypsy moth treatment to work, it must begin in the morning, as early as 5:15 a.m. Residents in and around treatment areas may be awakened by the noise of the low-flying airplane.

The treatment product is organic certified for food crops, the news release said. It has no known health effects for humans, pets, birds, fish, livestock, bees and other insects, but to avoid it residents may wish to stay indoors during the treatment and keep windows closed for a half hour after application. The residue does not cause damage to outdoor surfaces and can be removed with soapy water.

Treatment areas include:

  • Cloquet: A 460-acre area that runs north of Minnesota Highway 45 up to Pearl and State streets.
  • Duluth: A 352-acre area in the Lakeside neighborhood that begins approximately at Oneida Street on the south and North 52nd Avenue East on the east and extends northwest past Skyline Drive.
  • White Iron Lake, outside of Ely: A 77-acre area on White Iron Lake near the intersections of Shady Rest Road and Big Rock Drive.
  • Two Harbors: A 526-acre area that is centered on the intersection of Shoreview Road and Seventh Avenue.