If multiple REIs apply, which one must be adhered to according to pesticide regulations?

In pesticide regulations, when multiple Restricted Entry Intervals (REIs) apply, the requirement is to adhere to the longer REI. This is because the longer REI is designed to provide a greater margin of safety for handlers and workers by allowing more time for the pesticide residues to break down or dissipate before anyone can enter the treated area.

The REI is established based on the toxicity of the chemical to humans and the potential risk associated with exposure, and longer REIs indicate a heightened risk or longer persistence of pesticide residues. Therefore, following the longer REI helps ensure compliance with safety standards and protects workers from potential health risks associated with pesticide exposure.

Compliance with the longer REI promotes a safer working environment and aligns with the principle of erring on the side of caution, which is a guiding tenet in agricultural safety and pesticide regulations.