How do I remove a dried blood stain from a cloth seat cushion?
Hydrogen peroxide may cause damage to the fabric, may not remove the blood completely, and could “set” the stain by oxidation, making removal more difficult. A digester is called for here, and there are several over the counter versions of enzyme protein stain removers available with a google search. Professionals use products like Devour- a liquid enzymatic digester for the removal of aged protein stains. Most products are a powder that you mix with warm water, put on the stain, keep it moist by putting a wet washcloth or towel on it, allow the appropriate amount of time, reapply if required, rinse, allow to air dry. The enzymes eat the protein stain, but not the fabric. Complete removal of the stain with no chance of setting it or damaging the fabric with this method. Don’t breathe the dust from the product, it will irritate the lungs.
