Parts of Superior and Douglas County will be treated by aerial spraying to slow the spread of the Gypsy Moth.  The Gypsy Moth is an invasive, leaf-eating insect than can feed on most of the types of trees and shrubs that are found in North America.

Residents in the affected area more than likely already received a "yellow card notice" in the mail - which was sent by county and state officials.  This mailer provided answers to questions and gave a website that allowed for more information.

In general, the spraying will occur in May.  According to the information provided by the state and county officials, there is no potential harm to humans from the spray.

If you would like to be added to the list to receive email notifications about where specifically and when the spraying will occur, send a message  to

There is also an interactive map that shows the coverage area of the impending spray here.