Izigodo zomuthi oqinile ezomiswe emoyeni izinyanga eziyisithupha kuya kweziyishumi nambili ukuze umswakama wehle ungaphansi kuka-20 %. Ukomisa kuvimba intuthu eyeqile, kuthuthukisa ukusha nokwehlisa ukubuthana kwe-creosote. Kuwuphethiloli obalulekile wezitofu zokubhaka, izitofu zabakhandi bensimbi, ukwenza amalahle nemililo yokupheka.