First Spray scheduled - May 20, 2021

The first application of the Gypsy Moth aerial spray program is scheduled for Thursday, May 20. The exact time of the spray has not yet been determined, though it is usually at first light, and is likely to occur between 5:30-8:30 a.m.


The spray is completed with a twin-engine helicopter; residents can expect high audible levels as the helicopter completes its path.

Weather is the primary factor in the day and time of the spray. If the weather is not cooperative, the spray will not occur and the Town will update its website (www.pelham.ca/gypsy-moth) and social media pages.


Members of the public are unlikely to experience any health effects, and no special precautions are necessary or required. Individuals who have concerns should take reasonable precautions to avoid exposure during an application period of the program.


While no special precautions need to be taken, the following measures may be considered by residents living in treatment areas:

  • Whenever possible, remain indoors for 30 minutes after spraying to allow for the droplets to deposit onto the tree leaves.
  • Bringing laundry, toys and pets indoors before spraying begins.
  • Practice good personal and food hygiene (e.g., hand washing after outdoor activities, especially after gardening; leaving outdoor shoes at the door; washing all fruits and vegetables before eating or cooking).
  • Covering lawn furniture, outdoor tables, pools, BBQs, play equipment and sandboxes and/or rinsing them off with water after spraying is finished.
  • Minimize opening and closing windows and doors during the spraying.
  • Shutting off the heating/cooling vents or selecting the recirculate setting.
  • Contacting your family physician if you are concerned that a personal medical condition may be aggravated by the spraying.

The second spray application occurs within 7-10 days of the first spray, weather depending.

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