A blood spill — whether from an accident, a medical emergency, a violent incident, or a self-harm situation — can seem like something you can clean up yourself with a mop and some bleach. But blood and body fluids are classified as biohazardous materials for good reason. Here is why DIY blood spill cleaning is genuinely dangerous, and what professional biohazard decontamination actually involves.
The Bloodborne Pathogens You Cannot See
Blood can carry a range of serious infectious diseases, including HIV (Human Immunodeficiency Virus), Hepatitis B (which can survive on surfaces for up to 7 days), Hepatitis C, MRSA, and other bacterial and viral pathogens. You cannot tell whether blood is infectious by looking at it. Even a small amount of blood from an unknown source must be treated as potentially infectious. The risk is not just from direct contact — bloodborne pathogens can be transmitted through microscopic cuts or abrasions in the skin, through mucous membranes, and through aerosols created when blood is disturbed.
Why Household Cleaning Products Are Not Enough
Standard household bleach, disinfectant sprays, and cleaning products are not formulated or tested to decontaminate bloodborne pathogens. Professional biohazard cleaning uses hospital-grade disinfectants that are tested and certified to EN 14476 (virucidal), EN 1276 (bactericidal), and EN 13727 (antiseptic) standards. These products are not available to the public, and their safe use requires specialist training and full PPE including gloves, eye protection, respiratory protection, and disposable coveralls.
The Problem of Porous Surfaces
Blood does not just sit on the surface — it penetrates. Carpets, floorboards, mattresses, grout, and plaster can all absorb blood, making surface cleaning completely ineffective. Professional biohazard cleaning includes the removal and certified clinical disposal of all materials that cannot be decontaminated, followed by treatment of the underlying structure. In serious cases, floorboards may need to be lifted and subfloor materials replaced.
ATP Testing: How We Verify Decontamination
Professional biohazard cleaning companies use ATP (Adenosine Triphosphate) testing to verify that a surface has been properly decontaminated. ATP is present in all living biological material, including blood and bacteria. An ATP meter measures the level of biological contamination on a surface and provides an objective, measurable result. This is the same technology used in hospital infection control. At 2 of a Kind, we use ATP testing as standard on all biohazard jobs and provide a decontamination certificate on completion.
The Legal Position for Employers and Landlords
If a blood spill occurs in a workplace or rental property, the employer or landlord has a legal duty of care to ensure it is properly decontaminated. Under the Control of Substances Hazardous to Health (COSHH) Regulations 2002, employers must assess and control the risks from biological agents including blood. Asking an untrained employee or tenant to clean up a blood spill without proper PPE and training is a breach of these regulations.
If you are dealing with a blood spill in Yorkshire or Lancashire, do not attempt to clean it yourself. Call 2 of a Kind Cleaning Company on 07483 268365 — we are available 24/7 and can respond to emergency call-outs across the region.
