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Biohazard cleanup: crime scenes, unattended deaths, and hoarding

This hub covers cleanup after a death, a crime, serious injury, hoarding or heavy rodent activity: safety, who pays, costs and how to hire. The rule that matters most: blood and body fluids can carry bloodborne diseases, so leave that cleanup to trained crews. For rodent droppings, CDC says never sweep or vacuum them. Ventilate for 30 minutes, then soak them with disinfectant first.

Happening right now? Go to the first-48-hours steps

First steps

Cleanup types

Who pays

What it costs

Related hazards

Hire a pro

What should you do first?

If a death or crime has just happened, call 911 and wait for police and the medical examiner to release the scene. Do not start cleaning before they do. Once it is released, keep family members and pets out of the affected rooms, and close off the space if you can. Our biohazard emergency page lists the first calls to make, including your insurer and, if you rent, your landlord.

How does biohazard cleanup usually unfold?

Biohazard work is different from other cleanup because the hazard is often invisible. Blood and body fluids can soak through carpet, pad and subfloor and into drywall seams. Fluids can carry bloodborne diseases such as hepatitis B, hepatitis C and HIV, the hazards OSHA’s bloodborne pathogens standard is written to control for workers. Professional crews follow that kind of protocol: protective gear, removal of soaked materials, cleaning and disinfection, and proper disposal. Our guide to crime scene cleanup explains each stage in plain terms so you know what a crew should be doing.

Hoarding cleanup is slower and more personal. The physical hazards can include mold, pests, and blocked exits. The emotional side matters just as much. Hoarding cleanup covers how to plan the work with the person involved.

Rodent droppings: a common job you can sometimes do yourself

Droppings and nests in an attic, garage or cabin are a smaller biohazard, and CDC publishes a cleanup method. CDC says not to vacuum or sweep rodent urine, droppings or nesting materials. Open doors and windows for 30 minutes before cleaning, put on rubber or plastic gloves, then soak the area with disinfectant or a fresh bleach solution (CDC gives 1.5 cups of bleach per gallon of water) and let it sit for 5 minutes before wiping up. Heavy infestations, or droppings inside ductwork, are a job for a pro.

Who pays for biohazard cleanup?

It depends on what happened and what policies apply. Homeowners insurance, a landlord, or a state victim compensation program may cover some or all of the cost, and the answer varies by state and by policy. Photograph the area once police release it, keep every invoice, and ask your insurer what your policy covers before work starts. Our guide to who pays for biohazard cleanup explains the options to ask about.

What it costs and who to hire

Prices depend on how far fluids spread, how much material must come out, and how long the job takes. Our biohazard cleanup cost guide collects current published ranges. Families are often approached in a very hard week, so take time to compare. Ask for a written scope and price, ask how waste will be disposed of, and use our questions to ask a restoration company to compare at least two crews.

Sources

  1. How to Clean Up After Rodents, Centers for Disease Control and Prevention (April 8, 2024)
  2. Bloodborne Pathogens and Needlestick Prevention, Occupational Safety and Health Administration (accessed 2026-10-19)