 The firm also has produced PCBs (such as pyralene), herbicides (such as Agent Orange during the Malayan Emergency and the Vietnam War), and the recombinant bovine growth hormone (rBGH), used to increase milk production in cows.Europe has prohibited the use of rBGH in its dairy cattle and milk production.The documentary explains that Monsanto has been the subject of numerous lawsuits for environmental contamination since the late 20th century.