Amdro was patented in 1978 by the American Cyanamid company, now Ambrands, and was conditionally approved for use by the United States Environmental Protection Agency in August, 1980. It is a delayed-toxicity food chain killer, in which soldier ants carry the bait into the mound and feed it to the queen, killing her and decimating the mound.
Amdro, developed by American Cyanamid (now Ambrands), was conditionally approved by the EPA in August 1980. It is a delayed-toxicity food chain killer that targets soldier ants and their queen, leading to colony destruction.