Izinduku kazibuthe zisetshenziswa kakhulu ukuhlunga izikhonkwane zensimbi ezintweni ezingavuthiwe;Hlunga zonke izinhlobo zempushana ecolekileyo noketshezi, ukungcola kwensimbi kuketshezi oluncane nezinye izinto ezinozibuthe.Njengamanje, isetshenziswa kabanzi embonini yamakhemikhali, ukudla, ukugaywa kabusha kwemfucuza, i-carbon black kanye neminye imikhakha.