“…Ir is a contact and oral toxicant which has a broad spectrum of insecticidal and molluscal activity. The chemical and physical properties of the substance, as well as its toxicology and metabolism in birds and mammals, have been summarized in several publications (22,24,25,26,27,28,29). Mesurol causes temporary immobilization in birds, and can induce flock frightening responses when used at levels less than the LDso value (7,27,34).…”