The City of Toronto’s aerial spraying program to control European Gypsy Moths was slated to begin on Sunday but has been rescheduled for Monday due to the windy conditions.

The first bout of spraying was scheduled for Sunday morning in Etobicoke. But the breezy conditions prompted the city to post a tweet in the morning saying it’ll begin there on Monday.

Officials say infestation levels have reached a point where the usual manual control methods are no longer effective.

These methods include egg scraping, sticky traps and ground spraying of pesticides.

The aerial spraying program is designed as a stronger method to control the gypsy moth population.

The caterpillar, or larva stage of the insect, eats the leaves of trees making them more susceptible to disease and damage from other insects, according to the city.

For more information on Gypsy Moths and the control program click here.