Fekthering ea rona ea ho etsa ente, re sebetsa ka mokhoa o ikhethileng oa ho etsa likhaba tsa polasetiki tse tloahelehileng, re fana ka lihlahisoa tsa boleng bo holimo, tse entsoeng ka nepo tse tsamaellanang le lintlha tsa hau. Ho tloha litšebeletsong tsa lijo ho ea ho lintho tsa papatso, likhaba tsa rona tse iketselitsoeng li etselitsoe matla, ts'ebetso le ho tšoarella.
Re sebelisa mekhoa e tsoetseng pele ea ho bopa, re netefatsa hore khaba e 'ngoe le e' ngoe e bobebe empa e tšoarella, e hlahisoa kapele le ka nepo ho fihlela litlhoko tsa khoebo ea hau. Re tšepe ho fana ka litharollo tse tšepahalang, tse bolokang chelete e ngata tse phahamisang lebitso la hau ka likhaba tsa polasetiki tse entsoeng ka bokhabane, tse entsoeng ka maemo a holimo ka ho fetisisa a indasteri.