Before crime scene cleanup teams are even allowed to begin their work, police investigation teams do a thorough investigation of the scene, bagging and tagging all evidence. Professional technicians make sure to preserve all evidence and any other relevant information while providing scene remediation services.
After a successful robbery at a convenience store, the robber fled to his car and drove off. The injured clerk, who was bleeding profusely, called the police. The emergency response team arrived quickly at the scene and ordered an ambulance to transport the clerk to the hospital. The store clerk who was injured was able give detailed descriptions to police detectives. Police were also able review surveillance videotape. Death Scene Cleanup
After a thorough investigation of the crime scene by CSI, a professional cleaning company was called by police to clean up the aftermath of the robbery. As they were cleaning the area by the counter, one of the technicians noticed a small speck of blood that had been missed by the police as it was so small. Apparently, the robber had scratched himself on a metal appendage attached to the counter when he drew his gun.
Police detectives were notified of the discovery. One of the cleanup technicians showed it to the police. This company is familiar with identifying and working with police.
The blood was tested for DNA by the police and the samples were compared to those in the county jail. A previous defendant whose photograph matched the image in the convenient store's video footage was identified. The courthouse located the address of the victim and arrested and convicted him.
Although this isn't a common occurrence it is a requirement for trauma scene remediation work. Attention to detail is a primary qualification. It is not the same as janitorial services. Professional biohazard cleaner teams are tasked with eliminating potential hazards from blood and bodily fluids, wherever they happen to land. These cleanup teams must be thorough and attentive to all details. However, if it a source of great pride whenever something like this happens and the team is able to assist the police in their investigation.