I am hesitant to post anything on this as it changes constantly.
In the latest court case with chlorpyrifos, the prior elimination of the tolerances by the earlier court was struck down.
While it is complicated and can change rapidly, the current interpretation is that all tolerances are back in place, making labeled uses of chlorpyrifos products legal – AS LONG AS THE COMPANY HAS NOT PULLED THE LABEL (some have).
Products whose labels were not pulled include the following:
(Thanks to Clayton Myers, USDA, for compiling this list)
EPA Registration number (Product Name):
93182-7 (Gharda, Pilot 4E)
93182-8 (Gharda, Pilot 15G)
19713-505 (Drexel, Chlorpyrifos 15G)
19713-520 (Drexel, Chlorpyrifos 4E)
19713-521 (Drexel, Chlorpyrifos 15GR)
19713-599 (Drexel, Chlorpyrifos 4E-AG2)
19713-671 (Drexel, Lambdafos)
34704-857 (Loveland ‘Warhawk’)
34704-1077 (Loveland ‘Warhawk Clearform’)
34704-1086 (Loveland ‘Match-Up’)
Additionally, Adama has received an update on the existing stock provisions for three cholorpyrifos products as follows:
Sale and distribution of existing stocks of Pyrinex Chlorpyrifos Insecticide (EPA Reg. No. 11678-58) is permitted until June 30, 2024.
Sale and distribution of existing stocks of Chlorpyrifos 4E AG and Quali-Pro Chlorpyrifos 4E (EPA Reg. No. 66222-19) and Vulcan (EPA Reg. Nos. 66222-233) is permitted until April 30, 2025.
Use of existing stocks of Chlorpyrifos 4E AG, Quali-Pro Chlorpyrifos 4E, and Vulcan on food, food processing sites, and food manufacturing sites must be consistent with the product labeling. Such use is permitted until June 30, 2025.
Keep in mind this could change rapidly based on any new court ruling. Further, EPA has indicated they will most likely revoke uses for all but the 11 uses identified as safe in the original court case. Those 11 do not include any common vegetable crops in Georgia.
My personal view – if you have need for any legal use of chlorpyrifos in the short term, it is fine to currently use it. I would advise against any stockpiling for future use.