Blot fresh blood with a clean, cold damp cloth
Use cold water only; avoid hot water
Mix a small amount of mild dish soap with cold water
Dab the stain with the soapy solution using a clean cloth
Blot with a dry cloth to lift moisture
Apply a paste of baking soda and cold water to the stain
Let the paste sit for 30 to 60 minutes
Gently scrub with a soft brush or cloth
Blot with a clean damp cloth to remove residue
Spray or dab 3% hydrogen peroxide on the stain if needed
Blot immediately as the stain lifts
Repeat as necessary until the stain fades
Sprinkle baking soda over the area to absorb remaining moisture
Let it dry completely
Vacuum the baking soda off the mattress
Repeat the process if the stain remains
Test any cleaner on a small hidden area first
Use an enzyme cleaner for stubborn or old blood stains
Avoid soaking the mattress
Air-dry the mattress thoroughly after cleaning