What is the purpose of a restricted-entry interval (REI) on a label?

• A. It restricts entry into treated areas for a specified time to minimize human exposure
• B. It indicates the maximum storage time
• C. It defines buffer zones near water
• D. It specifies the re-entry timeline after harvest

Answer: (A)

Restricted-entry interval keeps people safe by limiting access to a treated area for a set time after application. This wait protects workers from exposure to residues that may be on surfaces or in the air, reducing the risk of skin contact or inhalation. The time frame is chosen to let residues dry or degrade to safer levels, and entry rules may require PPE if entry is allowed earlier. This concept isn’t about how long a product can be stored, nor about buffer zones for water protection, and it isn’t the rule governing harvest timing (that would be harvest-related language on the label).