Government is currently struggling to control the ODS because of its porous borders.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/zimbabwe-porous-borders-fuel-influx-ozone-depleting-substances
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere-and-ozone-layer
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ozone-layer
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/zimbabwe
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/montreal-protocol
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa