EPA Memorandum -- Residential Exposure and Risk Assessment for Propoxur Formulated Pet Collars

This document summarizes EPA's most recent safety assessment of flea collars with the chemical propoxur. The April 7, 2010 memo states (on page 10) that EPA found "risks that are of concern to the Agency" for children. The July 12, 2010 memo adjusts the numbers but comes to the same conclusion about unacceptable risk.