Banner for Chlorpyrifos

Under the authority of the Pest Control Products Act and based on the evaluation of currently available scientific information, Health Canada is cancelling outdoor uses of chlorpyrifos except for a limited list of uses that require mitigation measures, due to risks to the environment that have not been shown to be acceptable.

Re-evaluation decision for chlorpyrifos on the environment

The following uses are acceptable from an environmental perspective with required mitigation measures:
 • Standing water (temporary pools for larval mosquito control)
 • Outdoor adult mosquito control
 • Structural indoor and outdoor (non-residential)
 • Outdoor ornamentals (container stock root immersion only) for control of Japanese beetle larvae
 • Elm bark beetle and mountain pine beetle control
 • Greenhouse ornamentals

Cancelled uses with an extended phase-out schedule:

The following two cancelled uses were found to lack suitable alternatives:
 • Canola – for alfalfa looper control
 • Garlic – for dark sided and red backed cutworm


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