Feem ntau peb lub hnab tawv nqaij tsis tuaj yeem raug rau lub hnub, cua thiab nag. Tom qab ntev,
cov tawv yuav tawv thiab xim tsis zoo ua luaj. Tsis txhob khaws lub hnab txhua lub sijhawm.
Peb yuav tsum siv lawv ntau, ces rub lawv nrog nplua flannel. Koj tseem yuav tsum tau saib ntsoov cov kev hloov hauv cov khoom tawv muag saib xyuas Common Hom.
Txoj kev tu tus txheej txheem yog los ntxuav cov dej noo thiab av ntawm daim tawv nrog qhuav
Phuam, ntxuav nws nrog ib tawv tu tshuaj, thiab tom qab ntawd thov ib txheej nrog ib tawv tawv. Qhov no yuav ua rau cov khoom muag tawv muag thiab xis nyob txhua lub sijhawm. Tsis txhob
tshaj qhov tawv muag khoom, tsis txhob muaj kev puas tsuaj los ntawm kev sib txhuam nrog ntxhib thiab ntse
cov khoom, tsis txhob kub hauv lub hnub kub, roast los yog nyem, tsis txhob ua kom kub
khoom. Cov khoom siv yuav tsum tsis txhob ntub, Tsis txhob ua cov khoom acidic. Txhua zaus
so lawv nrog ib daim ntaub mos muag kom tsis txhob khawb thiab deterioration.
Thaum peb tab tom noj mov, los yog mus koom nrog tog neeg, cov khoom tawv nqaij ntawm lub cev yuav raug xaub
nrog qee qhov roj. Me ntsis ntawm nws, nws zoo li tuag. Peb yuav tsum nco ntsoov tsis txhob nrog
dej. Qhov zoo tshaj yog yuav tsum so nrog pob zeb hmoov los yog chalk-ash alkaline, los yog ntaub ntaub qhuav.