Act fast, use cold water, and blot gently with mild cleaners like dish soap or hydrogen peroxide while protecting yourself from contact with the blood. Never use hot water, and wear gloves and bag used cloths because blood is a biohazard.

Safety first

  • Wear disposable gloves so the blood does not contact your skin.
  • Open windows or use a fan for ventilation if using chemicals like hydrogen peroxide.
  • Put all bloody rags, paper towels, and gloves into a plastic bag, seal it, and dispose of it with household trash.

Before you start

  • Check what kind of carpet you have (wool, synthetic, etc.) and, if possible, look at the care label or manufacturer’s site.
  • Always test any cleaner (soap mix, peroxide, vinegar, etc.) on a hidden patch of carpet to check for color loss or damage.

Fresh (wet) blood stains

  1. Blot, don’t rub
    • Use clean white cloths or paper towels to blot up as much fresh blood as possible, pressing firmly but gently.
 * Work from the outside of the stain toward the center to avoid spreading it.
  1. Cold water rinse
    • Fill a spray bottle or bowl with cold water (never warm or hot, which can set the protein stain).
 * Lightly spray or dab the spot, then blot again with a dry cloth; repeat until the stain lightens.
  1. Mild detergent solution (if needed)
    • Mix about 1 tablespoon of scent‑free liquid dish detergent with 2 cups of cold water.
 * Sponge or dab the solution onto the stain, blot until it’s absorbed, and repeat until the stain is gone, then rinse with cold water and blot dry.

Dried or stubborn blood stains

  1. Loosen the dried blood
    • Gently brush the area with a soft brush or the edge of a spoon to break up crusted blood without damaging fibers.
 * Vacuum up loose particles before wet cleaning.
  1. Enzymatic or peroxide treatment (use with care)
    • For many carpets, an enzyme-based cleaner for protein stains (often sold for pet messes) can help dissolve dried blood; follow label directions and test first.
 * Alternatively, lightly dab the stain with a cloth dipped in 3% hydrogen peroxide after testing it on a hidden area to ensure it does not bleach the carpet.
  1. Blot and rinse
    • Let the enzyme or peroxide sit briefly, then blot with a clean cloth, again working from outside in.
 * Rinse by blotting with a cloth moistened with cold water to remove chemical residue, then blot dry.
  1. Absorbing pastes (optional)
    • Some guides suggest mixing cold water with salt, cornstarch, or baking soda to form a paste, applying it over the stain, letting it dry, then vacuuming.
 * Only use this after testing and if your carpet tolerates powders without matting or discoloration.

Drying and when to call pros

  • Blot with dry towels and, if possible, place folded towels and a heavy object on top for a while to pull out deeper moisture.
  • Aim a fan at the area or use a wet/dry vac in suction‑only mode so the padding under the carpet doesn’t stay wet and grow mildew.
  • If the stain is large, very old, or on delicate fibers like wool, or if there is a lot of blood from an unknown source, contact a professional cleaner or, for significant amounts, a biohazard cleanup service.

Information gathered from public forums or data available on the internet and portrayed here.