Raws li cov khoom siv ntau dhau los, tus kov tau yooj yim rau stain, tshwj xeeb tshaj yog cov hlau tsis tuav, yog li nws yuav tsum nkag siab txog kev saib xyuas thiab tu kev, raws li kev paub hauv kev lag luam, los qhia koj rau cov lus qhia ntawm tus kov txij nkawm.
Qee zaum tus yuam sij tsis yooj yim qhib, uas tshwm sim los ntawm cov plua plav hauv cov keyhole. Lub tshuab nqus tsev tuaj yeem siv los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nqus, nqus plua plav tawm thiab ntxiv ob peb tee roj nplua roj. Yog tias tus kov tau ua los ntawm cov hlau, koj tuaj yeem so nws nrog tshuaj txhuam hniav kom nws ci dua. Yog tias tus kov tau xeb, koj tuaj yeem so nws nrog daim ntaub mos muag hauv cov kua txiv lws suav, uas tuaj yeem tshem tawm xeb tsis muaj khawb.
