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Other/Inert Ingredients in Pesticides

Other/Inert Ingredients Active Ingredients

Use NPIC pesticide ingredient fact sheets to find specific chemical information.

Other ingredients are not listed on product labels for EPA-registered pesticides because their identity is considered to be confidential business information. You may also see them listed as “inert” ingredients.

While many of the chemicals used as other ingredients are not known to pose health or environmental risks, some of them can be toxic. In some cases, the other ingredients can pose greater risks than the active ingredient itself.

Additional Resources:

If you have questions about this, or any pesticide-related topic, please call NPIC at 800-858-7378 (8:00am - 12:00pm PST), or email us at npic@ace.orst.edu.

Last updated June 28, 2021

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