What does REI stand for in turf pesticide applications?

• A. Restricted Entry Interval
• B. Restricted Exposure Interval
• C. Re-entry Interval
• D. Required Entry Interval

Answer: (A)

REI stands for Restricted Entry Interval. It’s the minimum amount of time after a pesticide is applied during which entry to the treated turf area is restricted to protect workers from exposure. The label sets the REI based on how hazardous the product is and how it’s applied. During this period, unprotected entry is not allowed; entry is limited to trained handlers and only for tasks allowed by the label, often with the required personal protective equipment. Once the REI passes, entry is allowed under the label’s conditions. This is different from other intervals like harvest-related ones used in crops, since REI specifically governs worker re-entry after pesticide applications on turf.