Botlolo ea metsi e tletse metsi a khalase, a sebelisetsoang ho hloekisa fensetere ea koloi. Metsi a khalase ke a lintho tse sebelisoang ke likoloi. Metsi a fensetere ea koloi ea boleng bo holimo a entsoe haholo-holo ka metsi, joala, ethylene glycol, sethibela-mafome le mefuta e fapaneng ea li-surfactants. Metsi a fensetere ea koloi a tsejoa haholo e le metsi a khalase.