Feem ntau siv hauv kev ua kis las, ncaws pob, ntaus pob tesniv, lub tsev hais plaub ntaus pob thiab lwm qhov chaw ua kis las, txoj kev loj, kev tsheb ciav hlau ceev, thiab dav siv hauv tsev kho mob, tsev so, tsev noj mov, tsev neeg, kindergartens, tsev laus, txoj kev loj, factories xav tau kev poob siab, txo cov suab nrov, tiv thaiv qhov chaw ua haujlwm, thiab tuaj yeem siv tau yooj yim, tuaj yeem ua ke nrog ntau hom ntawm cov ntaub ntawv saum npoo, nws Cov yam ntxwv zoo tshaj plaws: tiv thaiv plam, tshuaj pleev thaiv hnub, hnav-tiv taus, nplaim retardant.