How to remove blood from carpet

Before you start

Blood needs a little more care than most stains. Wear disposable gloves, avoid direct contact and wash your hands afterwards. Take particular care with blood that isn't yours or whose source you don't know. If blood touches broken skin, your eyes or your mouth, follow current health guidance. This guide covers stain removal, not infection control. For a large amount, or if you're unsure, consider a professional.

• Whether the blood is still fresh or has already dried
• Whose blood it is, if you know, and roughly how much
• What your carpet is made from, if you know: wool or wool-rich, a synthetic, or a natural plant fibre such as sisal or seagrass
• Your carpet's care guidance or the maker's instructions
• Whether anything has already been used on the mark, and what
• Disposable gloves, clean white cloths or tissues, and a small hidden area to patch-test on

We read guidance from WoolSafe, Cormar, Brintons, the National Carpet Cleaners Association (NCCA), the Carpet and Rug Institute and IICRC on 21 September 2026, plus GOV.UK infection-control guidance for the point about handling blood. WoolSafe approves cleaning products, carpet makers sell carpet and the others are trade bodies, so we treat all of this as trade and maker guidance. The GOV.UK guidance is written for childcare settings, and the Carpet and Rug Institute and IICRC are American. Sources differ on water temperature and household cleaners, so we don't set a single rule. We haven't tested any of this ourselves, and guidance changes, so check the current instructions for your carpet.

If the blood is on a mattress rather than carpet, see how to get blood out of a mattress instead, which covers why a mattress's construction and maker's guidance matter. If it's on a sofa or upholstered chair, see how to get blood out of a sofa.

How to remove fresh blood from carpet

1. Put on disposable glovesAvoid direct contact with the blood, and wash your hands when you've finished.
2. Act while it's freshOlder marks are generally harder to shift, so start as soon as you can.
3. Blot up what you canPress a clean white cloth or tissue onto the blood and lift. Don't rub, which can spread the mark and damage the pile.
4. Work from the edge towards the centreUse a clean part of the cloth each time, so you aren't putting blood back.
5. Use a little cool or clean waterDampen a clean white cloth, blot, and repeat until little more transfers. Don't soak the carpet, and check your carpet's guidance first.
6. Only if a mark remains, use a compatible stain productChoose one whose label covers blood and your carpet's fibre, patch-test where it says to, and apply it to a cloth rather than straight onto the carpet.
7. Blot dry, then let it dry and reassessRinse residue only if the label says to, blot as dry as you can, keep off the area, and judge the result once it's dry.

Guidance differs on water temperature: some sources say cold, some cool, some warm, and others simply "clean water". Use cool or clean water sparingly. Avoiding hot water or steam is the cautious option.

What if the blood has dried?

Dried blood is generally harder to remove than a fresh mark. We found no household method for it that we can responsibly recommend as a rule, so there's no special trick here, only the same careful approach.

Start by working out what the carpet is made from and what its care guidance says, and consider what has already been used on the mark. If you decide to treat it, use only a compatible product whose label covers blood and your carpet's fibre, follow that label, patch-test first where it says to, and use as little moisture as it needs. If the mark doesn't shift, don't escalate through a series of household chemicals.

Let the area dry, then reassess. Complete removal can't be guaranteed, and if the mark persists, the carpet is delicate or you're unsure, a professional may be worth considering.

If you're not sure what caused the mark, or it's an old stain that has been treated several times already, our guide on how to remove old stains from carpet is the better fit.

Wool and other delicate carpets

What you can safely use depends on what the carpet is made from, so start with the carpet manufacturer's care guidance.

For wool and wool-rich carpet, use a product explicitly suitable for wool. WoolSafe recommends products carrying its approval mark, which it tests for wool, but that is guidance for wool rather than a rule for every carpet. Be wary of products that simply claim to be "suitable for all fibres": WoolSafe says such claims aren't always reliable. Whatever you use, patch-test somewhere hidden and keep moisture low.

If you don't know what the carpet is made from, or it's valuable, delicate or a natural plant fibre such as sisal or seagrass, treat that as a reason for extra caution and consider a professional.

What not to use blindly

Vinegar, bicarbonate of soda, salt and similar pastes appear in many online guides. Some sources suggest them, but they aren't established as suitable for every carpet and aren't part of our general method, so we give no recipe. Washing-up liquid is a similar case: the evidence conflicts, and WoolSafe advises against household cleaners on wool.

Hydrogen peroxide is mentioned in some guidance for residual colour on some synthetic carpets, but it can alter colour, and IICRC cautions against it on wool and other natural fibres without extensive testing. We give no instructions for it.

Chlorine bleach is a colour-loss risk and isn't a method we give. Some sources mention ammonia, but they also warn of colour change, so we don't offer it as a general method. Oxygen-based cleaners vary: follow the product's label and check that it suits your carpet's fibre. We give no recipes and never suggest mixing products.

Some stain products are sold as enzymatic. If you use one, what matters is that its label specifically covers blood and your carpet's fibre, and that you follow it.

Do you need a carpet cleaner or spot cleaner?

A carpet cleaner or spot cleaner isn't automatically necessary for a small blood mark. The usual starting point is blotting and, where needed, a compatible product.

If you're considering a machine, check your carpet's care guidance and the machine's and product's instructions, and avoid over-wetting. Our comparison of carpet cleaners and spot cleaners explains how the two types differ.

When to stop, and when to consider a professional

Stop, or pause and reassess, if:

• There's a large amount of blood.
• The source is unknown, or the situation is uncertain.
• The carpet is valuable or delicate.
• It's wool and you can't confirm that a product is suitable.
• A mark persists after careful treatment.
• You suspect the blood has soaked beyond the surface of the carpet.
• The carpet's colour or texture starts to change.

A professional cleaner may be worth considering in any of these cases, and for a large amount of blood or an uncertain situation in particular. We can't say a professional will get a better result, or that it's always the safer choice.

If a mark seems to fade and then comes back once the carpet has dried, that has more than one possible explanation, covered in our guide on why your carpet can still look dirty after cleaning.

Related guides

If the mark's origin is uncertain, or an older stain has already been treated, our guide on how to remove old stains from carpet is the better starting point. If you're weighing up a machine, see our carpet cleaner vs spot cleaner comparison. If a mark returns as the carpet dries, our guide on why your carpet can still look dirty after cleaning covers that. You can also browse the Carpets & Rugs section →