In 1970, DDT was banned in Norway and Sweden. The U.S. banned it in 1972, and the [[UK]] in 1984. Most developed countries have banned its use but it is still used for disease control in some tropical countries where no other methods exist. The quantities required for public welfare are a small fraction of the amount previously used for agricultural purposes. | In 1970, DDT was banned in Norway and Sweden. The U.S. banned it in 1972, and the [[UK]] in 1984. Most developed countries have banned its use but it is still used for disease control in some tropical countries where no other methods exist. The quantities required for public welfare are a small fraction of the amount previously used for agricultural purposes. |