Kev siv
Nws muaj cov nyhuv ua kom tuag taus thiab yog siv dav rau cov kab tsuag hauv cov zaub mov, noob, cov khoom siv tshuaj, pub, luam yeeb thiab lwm yam khoom. Nws kuj tseem siv tau rau fumigating, tua kab thiab nas nyob hauv cov chaw nyob, ntim, ntim, cov tsheb ciav hlau, nkoj, nkoj thiab lwm qhov chaw.
