Southern Agricultural Insecticides, was started in the 1930’s headed by Hans Diem. During this time, crop dusting by hand was the most common method of application. Custom dust blends included ingredients such as Sulfur, Copper, Pyrethrin and Rotenone. Personnel and equipment was often moved between locations in Florida, South Carolina and North Carolina to maintain a year round business. The company was incorporated in 1947. John Diem joined the business after a servicing the war stateside in explosives manufacturing. The company is still owned and operated by the founding family.