1. Tsis txhob nyob twj ywm ntev ntev hauv qhov chaw uas muaj cov dej xau lossis cov ntsiab lus siab ntawm tetrachloroethylene, vim tetrachlorethylene muaj tshuaj loog thiab tshuaj lom neeg lub cev.
2. Tetrachlorethylene muaj kev ruaj ntseg siab heev thiab muaj feem ntau. Yog tias muab pov tseg casually, nws yuav nkag mus rau hauv qab ntawm cov dej thiab ua paug rau cov dej. Yog li ntawd, nws yog qhov zoo tshaj los kho nws nyob rau hauv ib qho chaw sib koom ua ke.