The EPA banned it for indoor pest control in 2001, but 6 million pounds of it are applied annually to approximately 50 crops, including oranges, alfalfa, and almonds. In 2015, after a multiyear review, EPA scientists concluded that chlorpyrifos was harmful to human health and recommended that the agency ban it permanently. Then, just days before the ban was scheduled to go into effect in March 2017, newly appointed EPA administrator Scott Pruitt reversed it, on the grounds that the science was inconclusive.
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