how to get blood out of mattress, Accidents happen, but that doesn't mean your mattress is ruined. To effectively remove blood stains, start by blotting the area with a clean cloth to absorb excess blood. Mix cold water with a mild detergent and gently scrub the stain. For stubborn stains, hydrogen peroxide can be applied cautiously. Remember to test in an inconspicuous spot first. Once the stain lifts, blot the mattress dry with a clean towel. It's crucial to avoid using hot water, as it can set the stain. If the blood is fresh, prompt action is key. However, for dried stains, a mixture of salt and hydrogen peroxide can be applied and left to dry before brushing off.