The Oregon Department of Agriculture completed an investigation into a suburban Portland school for the misuse of toxic pesticides on district grounds, and environmental and public health advocates said it is time to update Oregon's school pest-management law to prevent future violations.

Hillsboro School District was found to be in violation of the law over the course of several years as it applied pesticides in a "negligent and careless manner," according to the state. The district also used Fumitoxin, a dangerous rodent-control pesticide, which has resulted in the deaths of children, including four in Texas, who breathed in the toxic gas.

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