Hold the stained area face down under cold running water until water runs clear.
Scrape as much of the blood off the fabric as possible.
Rub the stain with Sard Wonder Stick, Soap or Spray, following pack instructions, let stand for 30 minutes, then rinse with cold water.
Soak for 1 hour in an enzyme pre-treater/water solution made with 1 lid of Sard Wonder Stain Remover in 7 litres of warm water.
Use Cold Power and wash as the care label recommends.