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Learn about how to control the immature stages of the mosquitoes.


The larval suppression program is one of our most effective methods to reduce the number of biting mosquitoes by preventing the larval stage from maturing into adults. We employ larvidicing techniques to current and historical mosquito breeding sites to protect human health and improve the quality of life of our residents.

Controlling larval mosquitoes while they are still concentrated in a pool of water is easier, more efficient, and less costly environmentally than controlling dispersed adults.

The products we use eliminate or prevent the insects' growth. They can be insect growth regulators and/or biological materials such as bacteria. Also, there are other materials that can be used that are low impact such as refined oils and monomolecular films that control larvae and pupae.

We target the following areas:

  • Freshwater wetlands
  • Saltmarshes 
  • Cedar
  • Red maple swamps
  • Catch basins
  • Permanent and temporary water bodies
  • Artificial containers that hold water for extended periods

The products we use as larvicide are provided below.

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