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Methomyl

General Information

• Chemical Class: Carbamate
• Uses: Restricted use pesticide. Controls insect pests on field, vegetable, and orchard crops; turf (sod farms only); livestock quarters; commercial premises; and refuse containers.
• Alternatives: Organic Agriculture
• Beyond Pesticides rating: Toxic

Health Effects

• EPA Acute Toxicity Class: I (highly toxic)
• Cancer: Not documented
• Endocrine Disruption: Yes (30, 36)
• Reproductive Effects: Not documented
• Neurotoxicity: Yes (4)
• Kidney/ Liver Damage: Yes (4)
• Sensitizer/ Irritant: Yes (4)
• Birth/ Developmental Defects: Not documented

Environmental Effects

• Detected in Groundwater: Not documented
• Detected in Streams: Not documented
• Potential Leacher: Not documented
• Toxic to Birds: Yes (8)
• Toxic to Fish/ Aquatic Organisms: Yes (8)
• Toxic to Bees: Not documented
• Toxic to Mammals: Yes (8)
• Long-Range Transport: Not documented

Additional Information

• Regulatory Information:
  • EPA Plans New Use Limitations on Carbaryl, Carbofuran, and Methomyl to Protect Salmon and Steelhead in California, Idaho, Oregon, and Washington (5/2010)
  • EPA Reregistration Eligibility Decision (RED) signed (12/1998)
• Supporting information:
• Extoxnet Methomyl Factsheet (Extension Toxicology Network)
• PAN Pesticides Database - Methomyl (Pesticide Action Network)