Not to worry; Apocalypse Now is not being remade in our neighbourhood. But helicopters will be used nearby from mid May to mid June to control gypsy moths. You can check the interactive map at http://toronto.ca/lddmoth to find out where spraying will take place.
Spraying is weather-dependent and can only be initiated in specific weather conditions. As a result, specific spray dates will be confirmed 48 hours in advance and may be cancelled if conditions change.
No special precautions are required for residents in the spray zones, however, those wishing to avoid exposure can remain indoors during and immediately after the spraying. The insecticides that will be applied are not toxic to birds, humans, other mammals, adult moths, butterflies, bees and other insects and are approved by Health Canada for urban aerial use.