What does REI stand for in pesticide labeling?

• A. Restricted Entry Interval
• B. Required Entry Information
• C. Rapid Entry Initiative
• D. Regulatory Entry Index

Answer: (A)

REI means Restricted Entry Interval—the period after a pesticide is applied during which entering the treated area is prohibited to protect workers from exposure. The label specifies how long this interval lasts, and it can be hours or days depending on the product. The other options aren’t used on pesticide labels and don’t describe this entry-restriction concept. If entry is needed during the REI, the label’s conditions must be followed, including any PPE or other safety requirements.