Tsis yog, qhov kub ntawm da dej kub tsis txaus tua tus kab mob; yog tias qhov ntsuas kub thiab lub sijhawm tau ua tiav raws li cov txheej txheem kev ua kom tsis huv, nws yuav ua rau kub nyhiab lossis mob ua kom sov.
Tsis tas li ntawd, haus luam yeeb, haus cawv, teeb taws rauv taws, haus luam yeeb tshuaj ntsuab, haus dej kub, noj qij, mopping hauv pem teb nrog dej npau npau, thov cov roj hnav nrog qhov ntswg pleev, pleev khaub ncaws thiab ntsej muag nrog lub tshuab ziab plaub hau tuaj yeem tiv thaiv tsis tau mob ntsws. Yog tias koj tau hnov txog lwm txoj kev tiv thaiv, thov nug cov lus hauv thaj chaw tawm tswv yim. Cia' s kos.
