To Twenty & Twenty definition of computer cleaning is not only an act of removing dirt and dust, but also providing a thorough emptying and cleaning of the physical components of your company’s computers. Our computer decontamination technicians perform this service by deep cleaning the four main components, that is, the keyboard, the monitor, the mouse and the tower / desk unit. Our PC cleaning activities involve the physical cleaning of the inside and outside of a computer, including the removal of dust and debris from cooling fans, power supplies and other hardware components.