Human exposure to insecticide products containing pyrethrins and piperonyl butoxide (2001-2003).

Pyrethrum, used as an insecticide for centuries, is derived from dried and ground flowers of Chrysanthemum cinerariaefolium. Its current major use is in insecticide products to the control insects in the home and food handling establishments. We investigated human incidents reported through the American Association of Poison Control Centers (AAPCC) Toxic Exposure Surveillance System (TESS) associated with regulated insecticides containing pyrethrins and piperonyl butoxide (PY/PBO) from 2001 to 2003.