Chlorpyrifos Information

The EPA action on chlorpyrifos (Dursban/Lorsban) is primarily an agreement with Dow AgroSciences and other manufacturers to rapidly phaseout Chlorpyrifos products. The following explains which use areas will be affected by this action:

• Production will be stopped and all home, lawn and garden uses of chlorpyrifos eliminated.
• Production will be stopped and virtually all termiticide uses will be eliminated. Pre-construction treatment (pre-treats) use rates will be set at one half of one percent (0.05%) - According to the EPA, these two use areas were about half of the total use (total use is about 20 million pounds annually)
• Agricultural uses will be largely retained, BUT tolerances (allowed residues on food crops) will be significantly reduced on those foods that are noted as being a regular part of the diet of children. - Ag uses are the other 50% of total use. This on about 40 different crops.

Useful Chlorpyrifos Web Sites

• Chlorpyrifos Facts - EPA. February 2002.
  
• Chlorpyrifos Interrim Registration Eligibility Decision (IRED) - PDF Format. September 2001. (You will need Adobe Acrobat Reader to view this document.)
  
• Cancellation Notice for Chlorpyrifos found in the Federal Register, January 25, 2001 - Click on the 25th on the January calendar and it will take you to the FR documents for that day. The Chlorpyrifos Cancellation order is in both html and pdf there. This Cancellation notice has some changes in it versus the originally published agreements.
  
• EPA Chlorypyrifos web page - Provides information on the most recent action taken by EPA to phaseout Chlorpyrifos products.