Bloodstains are considered one of the toughest messes to clean. They harm everyone’s health and cause emotional burden. If not properly treated, they will cause permanent damage to surfaces. The cleaning process is very important, whether it is a fresh accident, a crime scene, or dried blood on a mattress or carpet.
This case study demonstrates how the certified biohazard and trauma cleaning company Unit444 in Perth approaches blood cleaning professionally. There are some steps you can take at home for smaller instances of blood.

Some Cleaning Blood Stains is Actually Difficult
When blood dries on fabric fibers and porous surfaces, blood protein binds tightly to them. If your blood stain is on a carpet or mattress, it will be hard to clean without the proper technique.
The stain becomes worse in hot water. It spreads by rubbing. And most household cleaning sprays and wipes are unable to dissolve the blood proteins.
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If blood is not cleaned properly, it can also pose serious health hazards. That is why blood cleaning after an accident, trauma, or crime scene needs to be done by certified professionals. It carries:
| Pathogen | Risk Level |
| HIV | High risk and survives on surfaces for hours |
| Hepatitis B & C | Very High risk and can survive for days |
| MRSA (bacteria) | High risk and highly resistant to regular cleaners |
| Other bloodborne viruses | Moderate to high risk |
Case Study: Blood Cleaning After a Home Accident in Perth.
The Situation
A family in South Perth contacted Unit444 after a serious accident at home. Within hours, blood had spread across a carpeted floor, soaked into the mattress in the bedroom, and had dried on other surfaces.
The family attempted to clean it with hot water and normal detergent. The stain got worse, and the smell persisted.
What Unit444 did: Step-by-step Process
Step 1: Site Assessment
The Unit444 team was there within hours. The team inspected the area to determine the extent of contamination, surfaces affected, and health hazards that may exist.
Step 2: Area Secured
To prevent contamination from spreading, affected areas were sealed with plastic barriers and protective sheeting.
Step 3: PPE and Safety First
All cleaners were equipped with full protective suits, gloves, goggles, and face coverings before entering the affected area. This is not an option; it is a requirement according to health and safety standards in Western Australia.
Step 4: Remove Blood From the Carpet
Hospital-grade enzyme-based cleaners (TGA-compatible) were used on blood. They started at the edge of the stain and moved toward the center to prevent spreading.
Step 5: Blood Cleaning Off the Mattress
The mattress was first soaked in cold water to soften the dried stain, then processed with oxygen-based cleaners. It was repeatedly blotted and dried thoroughly using fans and an airy space.
Step 6: Disinfection and Decontamination
Biohazard-grade disinfectants were used to sanitise all surfaces. The Unit444 team conducted ATP testing to confirm zero biological contamination before leaving the site.
Step 7: Safe Disposal
Contaminated materials such as gloves, cloths, and waste were disposed of in WA-approved biohazard disposal containers.
Outcome: The property was completely restored on the same day. The family was able to return to a safe, clean, and smog-free home.
📞 Call Unit444 for Quick Response: 0421 475 444
How to Clean Blood Stains at Home (Minor Cases Only)
If the bloodstain is small and fresh, such as a cut on your finger that dripped on the bedding, you can treat it yourself. This is what actually works:
For Fresh Blood Stains
- Only use cold water, not hot water. The stain becomes permanent in hot water.
- Avoid rubbing; just gently pat with a clean cloth.
- Use a little bit of liquid dish soap and blot it off again.
- Flush with cold water and repeat until the stain is removed.
Cleaning Dried Blood Stains
- Wet the stain with cold water to soften.
- Leave an enzyme stain remover on for 10-15 minutes.
- Pat with a clean white cloth, outside to in.
- Wash and repeat if necessary.
When You Must Call a Professional
Do not attempt DIY cleaning if:
- The blood spill size is considerable or has sunk deep into the surface.
- The source is unknown, and there is a risk of infection.
- The blood is from a traumatic event, accident, or death.
- The stain is in areas such as the subfloor or walls.
- The contamination has spread, and DIY efforts have been unsuccessful.
Unit444 offers Perth, WA, and surrounding suburbs 24/7 emergency blood or biohazard cleaning services. Due to privacy concerns, they use unmarked cars and help with insurance claims.
Frequently Asked Questions (FAQs)
Q1: Is it possible to clean blood stains without professional help?
Yes, but only for small, fresh, and minor stains. You need certified professionals if blood has dried on porous surfaces or blood has spilled in large volumes after a crime or accident scene.
Q2: Is cleaning dried blood stains the quickest?
Fresh stains are best treated with cold water and enzyme-based cleaners. Dried blood stains can be removed by applying a paste of hydrogen peroxide and baking soda, which can break down the blood proteins. Avoid hot water on blood stains.
Q3: How to clean a blood stain?
It depends on the stain’s freshness. For fresh stains, use cold water and blot immediately. Apply an enzyme-type cleaner to dried stains that break down blood proteins. For both, blot and never use hot water.
Q4: How is cleaning blood stains from carpet done?
Use an enzyme-based cleaner or an oxy-based carpet spray. Unlike normal soap, enzyme cleaners decompose the blood proteins. Dry and tough stains are treated with professional-grade Oxy Spot.
Q5: How to clean blood off mattress?
Act immediately. Use a dry cloth to blot up any excess blood. Dab cold water over the area with a damp cloth. Do not use hot water (it sets the blood permanently in the mattress fibers). The sooner you do, the less difficult it will be to lift.
Final Words
Blood cleaning is more than just removing the stain. It’s about your health, your property, and your peace of mind. If the stain is small, use cold water and enzyme cleaners on it as soon as possible. If it’s serious, leave it to the professionals.
Unit444 delivers compassionate service, hospital-grade equipment, and certified expertise to all jobs throughout Perth and Western Australia.
📞 Call Unit444 for Quick Response: 0421 475 444
🌐 Visit: unit444.com.au