Dr. Mark Abney:
“The US EPA announced [last week, Aug 18] that it will revoke all tolerances for chlorpyrifos. This will take effect 6 months after the final rule is published in the Federal Register. I do not know how long that will take, but I expect a matter of weeks. The link below will take you to an EPA website that provides additional information in addition to a link to the draft rule.”
Excerpt from the site:
“Chlorpyrifos is an organophosphate insecticide, acaricide and miticide used primarily to control foliage and soil-borne insect pests.
In August 2021, EPA released a final rule revoking all “tolerances” for chlorpyrifos, which establish an amount of a pesticide that is allowed on food. Read a prepublication version of the final rule: Chlorpyrifos; Tolerance Revocations (pdf) . In addition, the agency will issue a Notice of Intent to Cancel under the Federal Insecticide, Fungicide, and Rodenticide Act to cancel registered food uses of chlorpyrifos associated with the revoked tolerances.”