IMPORTANT: City staff are pleased to announce that an aerial spray program be will not be necessary in 2022
Helicopter

Spraying for 2022

Based on the inventory completed by Lallemand Inc./Bio-Forest over the winter of 2021/2022, large numbers of new egg masses were not found anywhere in the survey area, and therefore city staff are pleased to announce that an aerial spray program be will not be necessary in 2022.

Past Spraying Information

On April 19, 2021, Sarnia City Council approved the recommendation for Spongy Moth (formerly Gypsy Moth) Spray treatment in Sarnia in 2021.

Based on the inventory completed by Lallemand Inc./Bio-Forest over the winter, staff recommended that an aerial spray program be advanced again in 2021 for the areas on both public and private property identified as having potentially ‘severe’ infestations this year, as well as additional areas on public lands that are identified as having ‘moderate to severe’ infestations this year.

The aerial spray program, carried out by helicopter, has been applying the biological pesticide Foray 48B Biological Insecticide Aqueous Suspension, active ingredient is Bacillus thuringiensis subspecies kurstaki (Btk), Registration No. 24977 under the Government of Canada’s Pest Control Products Act (S.C. 2002 c. 28).

Spongy Moth Information

The moths, whose caterpillars hatch in vast numbers, can quickly defoliate trees and litter properties with droppings. Egg hatching and leaf development will be monitored on the trees with pink bands on them. This is done to determine the most effective time to complete the aerial spray program.

Check out the pages below for more information, including Home Control Methods and Frequently Asked Questions.

Tree with red ribbon to denote gypsy moth