[–] Farseli 0 points 2 points 2 points (+2|-0) ago
Rotenone. Linked to Parkinson's disease and is still approved for use in organic farming. It is also exempt from having a tolerance level regulation. Because it is exempt from tolerance, food is rarely tested for rotenone residues and there is no amount in food that would violate federal law or regulations. In the US it is only used still for killing fish, but it is used in farming in other countries and their produce is imported as organic which is where exposure to US residents comes from.