Gateway on Pesticide Hazards and Safe Pest Management

Updates from the Daily News Blog

Evaluation Used to Support Registration of Neurotoxic Chlorpyrifos Found To Be Fundamentally Flawed
November 20, 2018

Scientists Call for Ban on Organophosphate Pesticides
November 2, 2018

Take Action: Tell California Department of Pesticide Regulation to Ban Chlorpyrifos
October 22, 2018

Study of Rural New York State Homes Finds Pesticides in Every Sample Tested
October 18, 2018

Take Action: Tell Kroger to Stop Selling Food Grown with Toxic Pesticides
October 15, 2018

U.S. Court Tells EPA to Ban Chlorpyrifos
August 10, 2018

California to List Chlorpyrifos as a Toxic Air Contaminant
August 8, 2018

Final Arguments Made in Court to Ban Chlorpyrifos
July 17, 2018

Kroger Sets 2020 Phase-Out of Bee-Toxic Pesticides on Its Plants, Costco Encourages Suppliers to Change; Both Commit to Carry More Organic
June 29, 2018

State Agency Criticized for Failing to Protect Highest At-Risk Communities
May 24, 2018

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Chlorpyrifos

General Information

• Fact Sheet: Chlorpyrifos.pdf
• Product Names:

  Chemsico roach control (Chemiso)
  Pyrinex mole cricket bait (Micro-Flo)
  Dursban (Dow AgroSciences)
  Lorsban (Dow AgroSciences)
  Ortho Ant Stop (Solaris Group), formulated with Calcium silicate, Aromatic petroleum distillates
  Ortho Dursban Lawn & Garden Insect Control (Solaris Group), formulated with Calcium silicate
  Bonide Termite & Carpenter Ant Dust (Bonide Products)
  Raid Ant Bait (SC Johnson)
  Hot Shot Maxattrax Roach Bait (Spectrum Brands) 

• Chemical Class: Organophosphate insecticide
• Uses: food and feed crops, golf courses, as a non-structural wood treatment, and as an adult mosquitocide
• Alternatives: Agriculture, Nonresidential buildings
• Beyond Pesticides rating: Toxic

Health and Environmental Effects

• Cancer: Not documented
• Endocrine Disruption: Yes (30)
• Reproductive Effects: Yes (6)
• Neurotoxicity: Yes (8)
• Kidney/Liver Damage: Yes (17)
• Sensitizer/ Irritant: Yes (4)
• Birth/Developmental: Yes (6)
• Detected in Groundwater: Yes (6)
• Potential Leacher: Yes (6)
• Toxic to Birds: Yes (8)
• Toxic to Fish/Aquatic Organisms: Yes (8)
• Toxic to Bees: Yes (8)

Residential Uses as Found in the ManageSafe™ Database

• Tree-boring Caterpillars
• Wasps and Yellowjackets
• Carpenter Bees
• Cockroaches
• Bed Bugs
• Ticks

Additional Information

• Regulatory Status:
  • Beyond Pesticides' California Department of Pesticide Regulation Human Health Effects comments (2017)
  • Beyond Pesticides' comments on EPA Tolerance Revocations (2017)
  • EPA denies a petition requesting that EPA revoke all tolerances for the pesticide chlorpyrifos (2017)
  • EPA Requests for Columbia Study's Data (2017)
  • Revised 2016 Human Health Risk Assessment
  • NMFS Biological Opinion for Pesticides: Chlorpyrifos, Diazinon, and Malathion (2017)
  • EPA Reregistration Eligibility Decision (RED) signed (7/2006)
  • Beyond Pesticides' EPA Risk Assessment comments (2000)
• Supporting information:
  • Daily News Blog entries (Beyond Pesticides)
  • Widely Used Pesticide in Food Production Damages Children’s Brains (Beyond Pesticides, 2017)
  • Asthma, Children and Pesticides (Beyond Pesticides)
  • The Low Down on Dursban (Beyond Pesticides)
  • Alternatives to Using Chlorpyrifos (Beyond Pesticides)
  • Safer Choice (Beyond Pesticides)
  • NCAP Chlorpyrifos Factsheet (Northwest Coalition for Alternatives to Pesticides)
  • Extoxnet Chlorpyrifos Factsheet (Extension Toxicology Network)
  • PAN Pesticides Database:Chlorpyrifos (Pesticide Action Network)
• Studies:
  • Brain anomalies in children exposed prenatally to a common organophosphate pesticide. Rauh VA, Perera FP, Horton MK, et al. 2012. Proc Natl Acad Sci U S A. 109(20):7871-6.
  • Chlorpyrifos exposure and urban residential environment characteristics as determinants of early childhood neurodevelopment. Lovasi GS, Quinn JW, Rauh VA, et al. 2011. Am J Public Health. 101(1):63-70.
  • Impact of prenatal chlorpyrifos exposure on neurodevelopment in the first 3 years of life among inner-city children. Rauh VA, Garfinkel R, Perera FP, et al. 2006. Pediatrics.118(6):e1845-59.
  • Long-term sex selective hormonal and behavior alterations in mice exposed to low doses of chlorpyrifos in utero. Haviland, J. A., Butz, D. E., Porter, W.P. 2009. Reproductive Toxicology. 29(1):74-79
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