 Forensic cleaners move in once police and forensic officers have vanished at the scene. They're often not told how a person has died when called upon to clean the scene of a death, but from what they can see can give them some ideas. Crime scene cleaners grisly encounters on a daily basis. From the stench of aging, rotting corpses to blood spatter walls, the hardest part of the job is the smell. If you get a weak stomach, this certainly wouldn't be the job for you. The purpose of forensic cleaning is to remove any biological material from a crime or trauma scene and restore it to a liveable condition. Doing so safely often requires specialized equipment and knowledge that the average of population does not possess.