Regulatory Issues


EPA issued a final rule revoking all tolerances for the insecticide chlorpyrifos on Feb. 28, 2022. Lorsban or Dursban are some of the most common trade names for products containing chlorpyrifos.

EPA’s federal actions supersede ODA’s rule regarding use on food or feed crops. At this point, use on nonfood or nonfeed crops have not been impacted by federal actions. However, this is subject to change.

Bottomline: Do not use chlorpyrifos on any food or feed crops after Feb. 27, 2022.

Important: There may possibly be additional action on the federal level regarding product cancellations, sales and distribution. The details are unknown at this time, but ODA’s and EPA’s webpages will be updated periodically.​

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For more information on federal actions:

Final Rulemaking (12/15/20)

​Limitations on Pesticide Products Containing Chlorpyrifos

​Listing of Restricted Use Pesticides (RUP)

Originally Proposed Rules

Background: Chlorpyrifos and RUP rulemaking materials​

​Limitations on Pesticide Products Containing Chlorpyrifos

Public comment information for proposed chlorpyrifos rule

​The public comment period closed at 5 p.m. Oct. 22. Late comments will not be considered. 

Listing of Restricted Use Pesticides (updated 8/25/2020)

The public comment period closed at 5 p.m. Oct. 22. Late comments will not be considered.​

Chlorpyrifos workgroup

The Oregon Department of Agriculture’s (ODA) Chlorpyrifos workgroup will advise the Department on potential limitations to the use of chlorpyrifos in Oregon beyond the limitations specified on product labels. The goal for this committee is to explore appropriate science-based restrictions on products containing chlorpyrifos that protect public health and safety while fulfilling critical pest control needs of land managers.

Members of the advisory committee include leaders and experts from a wide cross section of interests, including agriculture, environmental justice groups, and a farmworker health and safety organization. The committee's work will be transparent, collaborative and include inclusive communication, consistent with ODA’s mission and strategic plan objectives. 



Rose Kachadoorian
Program Manager
Phone: 503-986-4651