M'mbuyomu, nsalu zakunja zinkagwiritsidwa ntchito ndi perfluorinated compounds (PFCs) kuti zichotse madontho opangidwa ndi mafuta, koma zapezeka kuti ndizosakhazikika komanso zowopsa zikawonetsedwa mobwerezabwereza.

Tsopano, kampani yofufuza yaku Canada yathandizira mtundu wakunja wa Arc'teryx kuti upangitse kumaliza kwa nsalu zopanda mafuta za fluorine pogwiritsa ntchito njira yatsopano yomwe imaphatikiza kupanga nsalu ndi zokutira zopanda pamwamba za PFC.