Crimson weaver ants, here feeding on the snail, are accustomed to control pests in China, Southeast Asia, and Africa for many generations. Chemical pesticides were being very first used close to 2500 BC, once the Sumerians applied sulphur compounds as insecticides.[9] Modern pest control was stimulated with the spread across https://www.4shared.com/u/fvUrp998/OPCpestservice.html