bcoz the room normally full with viruses and bacterias . that's the cheapest way to do it , bcoz it only cost me less than RM100 for 2 light tube...

do it on monthly basis or bi-weekly basis....plan to do a chemical wash on aircon as well ..

u can actually google for UV-C sterilization ....

this is the keyword .

viruses and bacteria can grow after few weeks later... its a matter of quantities only

nothing can completely remove virus . 99.9% will do ....well , UV light sterilization is use by Hospital as well . they just wont use ur so-called organic cleaner to clean their stuff .