PBAT ndi pulasitiki yotha kuwola. Imatanthauza mtundu wa pulasitiki yomwe yawonongeka ndi tizilombo toyambitsa matenda tomwe tilipo m'chilengedwe, monga mabakiteriya, bowa (bowa) ndi algae. Pulasitiki yabwino kwambiri yotha kuwola ndi mtundu wa zinthu zopangidwa ndi polima zomwe zimagwira ntchito bwino kwambiri, zomwe zimatha kuwola kwathunthu ndi tizilombo toyambitsa matenda tomwe timawononga chilengedwe zitatayidwa, ndipo pamapeto pake zimakhala zopanda chilengedwe ndikukhala gawo lofunikira la kayendedwe ka kaboni m'chilengedwe.
Misika yomwe cholinga chake chachikulu ndi mapulasitiki osungiramo zinthu zakale ndi mapulasitiki osungiramo zinthu zakale, mapulasitiki a zaulimi, matumba apulasitiki otayika ndi matebulo apulasitiki otayika. Poyerekeza ndi mapulasitiki akale osungiramo zinthu zakale, mtengo wa zinthu zatsopano zotayika ndi wokwera pang'ono. Komabe, chifukwa cha kukulitsa chidziwitso cha chilengedwe, anthu ali okonzeka kugwiritsa ntchito zinthu zatsopano zotayika zomwe zili ndi mitengo yokwera pang'ono poteteza chilengedwe. Kukulitsa chidziwitso cha chilengedwe kwabweretsa mwayi waukulu wopititsa patsogolo makampani opanga zinthu zatsopano zotayika.
Ndi chitukuko cha chuma cha China, kuchititsa bwino Masewera a Olimpiki, Chiwonetsero cha Padziko Lonse ndi zochitika zina zambiri zazikulu zomwe zidadabwitsa dziko lonse lapansi, kufunika koteteza cholowa cha chikhalidwe cha dziko lonse ndi malo okongola a dzikolo, vuto la kuipitsidwa kwa chilengedwe komwe kumachitika chifukwa cha pulasitiki lakhala likuganiziridwa kwambiri. Maboma pamlingo uliwonse alemba chithandizo cha kuipitsidwa koyera ngati chimodzi mwa ntchito zawo zazikulu.
