The Restricted Entry Interval (REI) on a pesticide label is intended to:

• A. gives the minimum time a worker can remain in a pesticide storage area
• B. reduces the potential for worker exposure to a pesticide after an application
• C. gives the time to wait between treatment and harvest
• D. indicates the PPE required

Answer: (B)

The main idea is that the Restricted Entry Interval sets a waiting period after a pesticide is applied during which entry to the treated area is limited to protect workers from exposure. By keeping people out (or limiting activities) for that time, residues have a chance to dry, settle, or degrade, which lowers the chance of skin contact or inhalation once workers do enter. This purpose directly matches the choice that it reduces potential worker exposure after application.

It’s helpful to distinguish this from other label times: the pre-harvest interval tells you when it’s safe to harvest a crop after application, not about who can enter the field. PPE requirements are listed separately on the label and describe the gear needed for handling or entering, not the timing restriction itself.