Ntau lub twj tso kua mis yog ib tug ntaus ntawv uas dispenses ib yam khoom uas siv lub nqus tsev nqus tsev. Thaum lub twj tso kua mis actuator yog pressed, Nws ua tau kwv yees li ntawm 2cc ntawm cov khoom. Cov li no li lawm, tsis zoo li cov twj tso kua mis uas tsis yog-lotion twj tso kua mis, tsis txhob clogged nrog khoom. Lawv plhaub plhaub kuj pub cua txaus, tsim siab hauv lub raj mis tsis qhuav nws. Lawv tsim nyog siv ntau heev, tshuaj zawv plaub hau, thiab cov neeg mob.
