Guide · 5 min read · Updated September 11, 2026

How to Choose a Biohazard Cleanup Company

Nine questions that separate a certified remediation contractor from a general cleaning crew with a pressure washer.

You are hiring under pressure

These decisions get made in the worst hours of someone's life, usually from the first search result, often without comparing anyone. That is exactly the situation where a few specific questions protect you, and all of them can be asked in a two-minute phone call.

The nine questions

Are your technicians trained to the OSHA bloodborne pathogen standard, and can you show current documentation? How is contaminated waste transported and disposed of, and do I get a manifest? Do you perform verification testing and provide results in writing? Do you bill insurance directly and write estimates to carrier standards? Are you licensed and insured for biohazard remediation specifically? Do you use unmarked vehicles? What is your actual response time to my address, not your advertised one? Will the person quoting the job be on site? Do you remove contaminated porous material or clean it in place?

The last question matters most

Removing porous material is the difference between remediation and cleaning. A contractor who says they will clean and seal contaminated subfloor rather than remove it is proposing a job that will fail, and the failure shows up as returning odor two to three weeks later, after payment.

Warning signs

Hourly pricing with no scope. Pressure to sign before a written estimate. Leading with odor treatment rather than source removal. No verification testing. Vague answers about disposal. A quote that is dramatically below others, which nearly always means porous material is staying in place.

What good looks like

Answers the phone at any hour with a person, not a service. Gives a realistic response window. Provides a written scope and price. Communicates with your adjuster directly. Documents everything and hands you the file at the end. Treats the property and the people in it with discretion.