Diamond insecticide was federally registered in 2004 as an organophosphate replacement for insect pest control in cotton. Diamond emerges as a broad spectrum lepidopterous insect pest control agent demonstrating control against Heliothines, Loopers, and Armyworms as well as established control of Lygus, Stinkbug, Fleahopper, and Whitefly. Updates of recent 2005 efficacy data will be presented.