Removing a blood stain from clothing or a sheet is no small feat.
Whether the stain is recent or already dry.
That's what you think now.
You will change your mind after reading the effective tip to clean a blood stain.
1. Rub the stain with saline solution.
2. Then dab it with 10 volume hydrogen peroxide.
3. Rinse your laundry well.
There you go, you've cleaned your blood stain -;).
This trick works with almost all colorfast fabrics (i.e. washfast fabrics, even colored ones).