Milandu yanyengo ilinso pachiwonetsero pambuyo pa chigamulo chodziwika bwino sabata yatha. Khothi lalikulu loona za ufulu wachibadwidwe ku Europe lati boma la Switzerland likuphwanya ufulu wa nzika zake chifukwa chosachitapo kanthu pazanyengo. Mlanduwu, womwe wabweretsedwa ndi amayi achikulire opitilira 2,000, ndi umodzi mwamilandu yopitilira 2,300 yanyengo yomwe yaperekedwa motsutsana ndi makampani ndi maboma padziko lonse lapansi (onani 'Milandu yanyengo ikukwera').