"spray txheej" thiab "hmoov txheej" yog hais txog tib txoj kev, qhov twg cov hmoov yog siv rau ntawm qhov chaw thiab tom qab ntawd fused los tsim kev tiv thaiv thiab kho kom zoo nkauj.
"Txaus txheej" thiab "hmoov txheej" yog qhov tseeb tib yam. Lo lus "hmoov txheej" feem ntau yog siv los piav txog cov txheej txheem uas cov hmoov yog txau rau ntawm qhov chaw, thiab tom qab ntawd nws tau yaj thiab fused los ua kom ruaj khov thiab ua kom zoo nkauj. Cov txheej txheem no tau siv dav rau ntau yam kev siv, suav nrog kev ua tiav ntawm cov hlau, rooj tog zaum, thiab cov khoom siv tsheb.
