Gypsy moth aerial spraying will begin on June 27 for Bayfield and Douglas counties.
The Wisconsin Department of Agriculture says that selected sites located in the counties will undergo spraying treatments to control the spread of gypsy moth.
A portion of the city of Superior will be included, as well.
The spraying may last throughout the week, depending on weather conditions.
Spraying can start as early as 6 a.m. and will continue throughout the day until the spraying is complete.
Spraying requires single-engine planes to fly low, above tree tops.
The planes will apply mating disruption or pheromone flakes; the flakes are about the size of a grain of rice.
The spraying doesn’t affect organic certification, and is not toxic to people, bees, animals, birds and plants.