What does the Restricted Entry Interval (REI) on a pesticide label aim to accomplish?

The Restricted Entry Interval (REI) on a pesticide label is designed to minimize the potential for worker exposure to pesticide residues after application. This interval specifies the amount of time that must pass before workers can safely enter a treated area without protective clothing. By establishing this waiting period, the REI aims to protect worker health by ensuring that any potentially harmful residues have degraded to safe levels or have been sufficiently reduced through factors like dissipation and breakdown.

Pesticide labels that include an REI indicate the commitment of manufacturers to safety and compliance with regulatory standards meant to safeguard agricultural workers. This regulation is crucial for preventing exposure-related health risks that could arise from handling or interacting with recently treated areas. Therefore, the REI serves an essential role in protecting the well-being of those who work in environments where pesticides are applied.