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Updates from the Daily News Blog

Organophosphate Pesticide Drift from Agricultural Fields Elevates Risk for Pregnant Farmworkers
October 28, 2025

EPA Reverses on Decision to Ban Flea Collars with Toxic Pesticide, Leaving Children at Risk
September 29, 2023

Court Requires EPA to Respond to Petition to Ban Toxic Pesticide in Pet Products
May 7, 2020

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Tetrachlorvinphos (TCVP)

General Information

• Product Names:

  Rabon
  Gardona
  Equitrol Feed-Thru Fly Control
  Hartz 2 In 1 Collar For Cats
  Hartz 2 In 1 Collar For Dogs
  Hartz 2 In 1 Plus Long Lasting Collar For Dogs
  Hartz 2 In 1 Plus Seven Month Collar For Cats
  Beetle Shield 6
  Crown All Purpose Livestock And Poultry Dust With Rabon

• Chemical Class: Organophosphate insecticide
• Uses: Fleas, ticks, various flies, lice, and insect larvae on livestock and pets and their premises. Also applied as a perimeter treatment. 
• Beyond Pesticides rating: Toxic

Health and Environmental Effects

• Cancer: Yes (1, 2)
• Endocrine Disruption: Not documented
• Reproductive Effects: Not documented
• Neurotoxicity: Yes (1)
• Kidney/Liver Damage: Yes (1)
• Sensitizer/ Irritant: Not documented
• Birth/Developmental: Not documented
• Detected in Groundwater: Not documented
• Potential Leacher: Not documented
• Toxic to Birds: Not documented
• Toxic to Fish/Aquatic Organisms: Yes (1)
• Toxic to Bees: Yes (1)

Additional Information

• Regulatory Status:
  • EPA Registration Documents
• Supporting information:
  • Daily News Blog
  • NRDC Petition
• Studies [compiled from the Pesticide-Induced Diseases Database]
  • Temporal trends of agricultural organophosphate pesticide use in California and proximity to pregnant people in 2021. Rotkin-Ellman, M., Carpenter, C., Richardson, M.J. et al. Temporal trends of agricultural organophosphate pesticide use in California and proximity to pregnant people in 2021. BMC Public Health 25, 3121 (2025). https://doi.org/10.1186/s12889-025-23939-y
  • Pre-conceptional and prenatal exposure to pesticides and pediatric neuroblastoma. A meta-analysis of nine studies. Khan, A., Feulefack, J., & Sergi, C. M. (2022). Pre-conceptional and prenatal exposure to pesticides and pediatric neuroblastoma. A meta-analysis of nine studies. Environmental toxicology and pharmacology, 90, 103790. https://doi.org/10.1016/j.etap.2021.103790
  • Parental Pesticide Exposure and Childhood Brain Cancer: A Systematic Review and Meta-Analysis Confirming the IARC/WHO Monographs on Some Organophosphate Insecticides and Herbicides. Feulefack, J., Khan, A., Forastiere, F., & Sergi, C. M. (2021). Parental Pesticide Exposure and Childhood Brain Cancer: A Systematic Review and Meta-Analysis Confirming the IARC/WHO Monographs on Some Organophosphate Insecticides and Herbicides. Children (Basel, Switzerland), 8(12), 1096. https://doi.org/10.3390/children8121096