The risk-assessment techniques, protocols governing generation of toxicology studies, and exposure evaluation methods used to support the evaluation of iodomethane have been peer-reviewed by agency scientists, the independent Scientific Advisory Panel or both. By using a thorough evaluation process, the agency concluded that there are adequate safety margins and the registration of iodomethane does not pose unreasonable risks.
On Sept. 25, EPA received a letter signed by 54 scientists who oppose the registration of iodomethane as a soil fumigant, citing potential human health and environmental concerns, and requesting additional peer review. EPA has discussed our assessment with some of the signatories and sent a letter to inform the scientists of the rigorous science used to support EPA's decision.
Iodomethane can be used as a pre-plant soil fumigant to control plant pathogens, nematodes, insects, and weeds on strawberries, tomatoes, peppers, ornamentals, turf, trees, and vines.