Wikipedia
The Deutsche Gesellschaft für Schädlingsbekämpfung mbH (translation: German Corporation for Pest control), in short Degesch, is a German chemical corporation. Degesch produces pesticides used against weeds and insects. Degesch had the patent of the infamous Zyklon B, a pesticide that was used to execute people in gas chambers of German extermination camps during the Holocaust. Through the firms Tesch & Stabenow GmbH (Testa) and Heerdt-Linger (Heli) Degesch sold the poisonous gas Zyklon B to the German Army and the Schutzstaffel, abbreviation SS.
Degesch was founded in 1919 as a subsidiary of Degussa. Its first director was chemistry Nobel laureate Fritz Haber. In 1936 Degussa held shares as IG Farben (both 42,5%) and Th. Goldschmidt AG (15%). After the second world war Degesch continued production. In 1986 the company was sold to Detia Freyberg GmbH; The current name is Detia-Degesch GmbH.