Pogwiritsa ntchito ziweto zamakono, pofuna kuchepetsa kukhudzidwa kwa chilengedwe cha famuyo ndi madera ozungulira, nthawi zambiri imatsekedwa kapena kutsekedwa.Popeza minda yambiri imakhala ndi malo achinyezi komanso zakudya zopatsa thanzi, amakonda kuswana mabakiteriya ndi ma virus omwe amawononga chilengedwe komanso thupi la munthu!Panthawiyi, njira zogwirira ntchito zotsekera ndizofunikira.Mwa njira zosiyanasiyana zoletsera, kutsekereza kwa UV ndikothandiza popewera miliri chifukwa cha mphamvu yake yodabwitsa komanso palibe kuipitsa kwachiwiri.M'zaka zaposachedwa, wakhala akugwiritsidwa ntchito kwambiri ndi mabizinesi ambiri apamwamba m'mafakitale obereketsa ndi chakudya.

Nyali ya Ultraviolet germicidal ili ndi mphamvu yotseketsa bwino, kufupikitsa kutalika kwa mzere wa msonkhano, kuchepetsa ndalama zogulira, kuchepetsa kuchuluka kwa nyali zomwe zimagwiritsidwa ntchito.