Cleaning with chemical disinfectants alone is insufficient in today’s health care facilities. Chemicals do a great job at killing bacteria and viruses but they are dependent on the people that apply them and the contact surfaces they are applied to. UVC treatments are a secondary process to ensure that no areas are missed in the cleaning operation. High touch areas like electronic equipment in hospitals or laboratories are difficult to spray down with bleach. UVC energy contacts all the exposed surfaces including the hard to get places.