What does the Restricted-Entry Interval (REI) indicate?

The Restricted-Entry Interval (REI) is a critical component of pesticide safety and indicates the timeframe during which workers must avoid entering a treated area after pesticides have been applied, unless they are wearing appropriate protective clothing. This interval is established to protect workers from potential exposure to harmful pesticide residues that could pose health risks.

While the other options relate to aspects of pesticide use, they do not accurately describe the REI. Harvesting and grazing regulations are usually determined by specific withholding periods or guidelines separate from the REI. The reapplication timeline is not governed by the REI but instead by the product label, which specifies when it is safe to reapply. Therefore, the answer regarding the REI focuses solely on worker safety in regard to pesticide exposure after treatment.