Quick answer: Blot fresh blood with a clean, dry towel first. Check your mattress and cover’s care instructions before using any liquid. If the manufacturer permits water on the cover, use a small amount of cold water on a cloth and blot gently; keep moisture out of the mattress and let it dry fully.
Before you start
Strip the bed and launder sheets and a washable protector according to their labels. Wear disposable gloves if handling someone else’s blood or if you have broken skin. Avoid rubbing the stain or transferring it to clean bedding. Check whether the mattress cover can be removed: a zipper alone does not mean removal is permitted.
Care rules differ. Casper recommends limited spot-cleaning without soaking its mattress; Tempur-Pedic says not to wash or wet TEMPUR material. For a foam insert, get model-specific advice before applying any moisture.
How to treat fresh blood
- Blot excess blood with a clean dry cloth. Work from the outside toward the center, changing the cloth as needed.
- Check the maker’s instructions. If cold-water spot-cleaning of the cover is allowed, lightly dampen a cloth and dab; do not pour or spray liquid into the mattress.
- Blot with a dry towel to remove as much moisture as possible. Repeat only if permitted and avoid saturating the cover or foam.
- Leave the area exposed until fully dry; a fan can help. Do not put bedding back on a damp mattress.
Cold water is a sensible first choice when the cover permits it; avoid heat, which can make protein stains harder to remove. Results depend on the fabric and stain.
What about dried blood?
Read the specific cover-care instructions first. If the maker approves a cleaner for that material, test it in an inconspicuous area and follow its directions, using as little moisture as possible. Blot rather than scrub. Old stains can remain even after careful cleaning; avoid repeated saturation in pursuit of a perfect result.
For an extensive stain, delicate fabric, deep contamination or persistent moisture, contact the manufacturer or a cleaner familiar with the exact mattress. Ask about warranty implications before treatment.
Should you use peroxide, enzymes or baking soda?
Do not assume any household mixture is safe on every mattress. Peroxide can discolor fabrics; enzyme cleaners and acidic products can damage certain materials or finishes. Baking soda paste adds moisture and residue. Use a product only if the mattress maker permits it for the specific cover and follow both labels. Never mix cleaning chemicals.
A removable, washable cover may have different instructions from the foam beneath. Keep the insert dry and follow the label, including any restrictions on bleach and stain removers.
Drying and preventing future stains
Airflow and time matter, but there is no universal drying period: humidity, material and amount of liquid vary. If the mattress stays damp or develops a persistent odor, seek model-specific advice before covering or using it. A fitted waterproof protector or washable pad can make future cleanups easier, although no barrier guarantees complete protection.
Frequently asked questions
Should I use hot water?
Generally start with cold water only if the cover manufacturer allows it; heat can set protein stains.
Can I use a steam cleaner?
Do not assume it is safe. Heat and moisture can damage some mattresses. See our steam-cleaning guide.
Will the stain always come out?
No. Fabric, stain age and permitted cleaning methods all affect the result.
What about Tempur-Pedic?
Keep TEMPUR foam dry and follow the specific cover label; see our Tempur-Pedic care guide.