Disinfecting kills germs on surfaces or objects. Disinfecting is a process of using chemicals to kill germs on objects or surfaces. Although it can, disinfecting does not necessarily clean dirty surfaces or remove germs, Disinfecting will typically further lower the risk of spreading infection after cleaning, by killing germs on a surface.
When Sanitizing the number of germs on surfaces or objects are lowered to a safe level, typically judged by public health requirements and/or standards.
When we remove dirt, germs and/or impurities from surfaces or objects, we are Cleaning. The process of cleaning works by using soap or detergent, combined with water, to physically remove germs (dirt/impurities) from surfaces. Cleaning does not necessarily kill germs, but it lowers their numbers and the risk of spreading infection by removing them.