(in French only)
Ouvrir le menufermer le menu

Biological control of biting insects

Since 1993, the Ville de Mont-Tremblant has applied, throughout its territory, its program for biological control of biting insects.

The goal is to reduce by at least 90 percent the nuisance caused by biting insects such as black flies and mosquitoes.

The spraying is done in the spring; in some parts of the territory application is done by a helicopter flying at a very low altitude.

The biological insecticide used is not dangerous. It is a bacterial protein that comes from an organism called Bacillus thuringiensis israelensis, more commonly called BTI.

It costs $20 “per door” – per dwelling – to ensure biological control of biting insects.

A few practical tips

To avoid having man-made habitats increase the incidence of this nuisance, here are a few tips.

  • Ensure that your drains are in good condition and that water drains away properly.
  • Prepare your swimming pool early in the season; a pool that has not been prepared can generate mosquitoes starting from the third week in May.
  • Don’t leave tires with water in them lying around outside and close to dwellings.
  • Turn over your boat or, if you leave it right side up, be sure to remove the plug.
  • Empty wheelbarrows and any buckets; when they are full of water they provide an excellent breeding ground for mosquitoes.

All these containers can produce several hundred mosquitoes every seven or eight days.


GDG Environnement
​1 888 567-8567