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You are here: NPIC Home Page Pesticide Ingredients Active Ingredients Resmethrin

Resmethrin is a pyrethroid insecticide. Pyrethroids are synthetic compounds made to mimic the pyrethrins that are isolated from chrysanthemum flowers. Resmethrin is a broad-spectrum insecticide that works by interfering with a nerve cell's ability to send a normal signal by jamming open tiny gates on the cell that need to open and close rapidly to carry the message. Resmethrin is used in industrial settings, on livestock and pets, and in residential settings.

General Questions about Resmethrin

What is resmethrin? What are some products that contain resmethrin? How does resmethrin work? How might I be exposed to resmethrin What are some signs and symptoms from a brief exposure to resmethrin? What happens to resmethrin when it enter the body? Is resmethrin likely to contribute to the development of cancer? Has anyone studied non-cancer effects from long-term exposure to resmethrin? Are children more sensitive to resmethrin than adults? What happens to resmethrin in the environment? Can resmethrin affect birds, fish, and other wildlife?

General Fact Sheet	Synthetic Pyrethroids and Paresthesias Medical Case Profile
What should I do during mosquito spraying? Q & A	What should I do during mosquito spraying? Podcast (1:39 min., 1.50MB)

If you have questions about resmethrin, or any pesticide-related topic, please call NPIC at 1-800-858-7378 (8:00am - 12:00pm PST), or email at npic@ace.orst.edu.

Related Topics:

What are pests?

What are pesticides?

Please read our disclaimer | Contact us | About NPIC | En español

NPIC provides objective, science-based information about pesticides and pesticide-related topics to enable people to make informed decisions. NPIC is a cooperative agreement between Oregon State University and the U.S. Environmental Protection Agency (cooperative agreement #X8-83947901). The information in this publication does not in any way replace or supersede the restrictions, precautions, directions, or other information on the pesticide label or any other regulatory requirements, nor does it necessarily reflect the position of the U.S. EPA.