Raws li qhov teeb meem sib koom ua ke sib xyaw ua ke txuas ntxiv mus thoob plaws lub tebchaws thiab lub ntiaj teb, qhov xav tau kev nyab xeeb, tshwj xeeb tshaj yog nyob rau hauv kev lag luam khoom noj, yeej tsis tau tsim nyog dua. Nyob rau hauv kev ua zaub mov noj, cov khoom lag luam nco tau tshwm sim ntau zaus thiab feem ntau ua rau kev puas tsuaj rau cov tuam ntxhab thiab cov neeg siv khoom. Ntau cov tuam ntxhab tseem siv cov cuab yeej siv rau cov ntaub ntawv xws li cov yas lossis roj hmab, txawm tias muaj kev phom sij loj uas lawv ua rau khoom lag luam zoo. Kev laus plastics thiab roj hmab bands tsim tawm cov teeb meem uas muaj cov khoom noj uas tsis txaus ntseeg, thiab cov kab nrib pleb thiab cov tshuaj tua kom tsawg fester. Kev siv cov ntaub ntawv xws li hlau lossis hlau stainless, cov chaw tsim khoom tuaj yeem lav cov khoom muaj kev nyab xeeb dua vim tias lawv tsis tshaj cov kab mob