Cov dej tua hluav taws uas siv tau zoo dua rau kev siv hauv tsev
1. Tsis muaj kuab paug, pom meej;
2. Muaj ntau hom kev tua hluav taws, khoom, kua, roj, roj lauj kaub hluav taws;
3. Qhov tsis txaus ntawm cov hluav taws nyob tsuas yog txiav tawm lub hwj chim kom tua hluav taws.
