Crime-scene clean-up involves the cleaning up of bio-hazardous material, such as blood, tissue, and/or other bodily fluids. This may mean the biologically contaminated scene of a violent death such as homicide, suicide, accident, or in deaths in which decomposition has begun to occur.
Special knowledge is required to safely handle bio-hazardous material; the companies that handle crime scene clean up have the training to handle such scenes and all hazardous materials.