Removing dried blood from a carpet requires patience and persistence. Gather a steel brush, a supply of clean cloths, hand dishwashing detergent, cold water and a fan. The time to complete the process depends on several factors, including the size of the stain. Carpet requires a few hours to dry thoroughly.
- Remove surface materials
Use a wire brush to remove excess dried blood from the surface of the carpet fibers. Remove as much of the dried blood as possible before applying water to prevent the stain from spreading in the fibers.
- Wet the stain
Mix a small amount of liquid dishwashing detergent in cold water. Use a clean white cloth to apply the liquid to the stain. For large stains begin at the outer edge and work toward the center. Continue to apply the detergent solution until the entire stain is wet.
- Absorb by blotting
Use a clean cloth to blot the stain and absorb any remaining blood from the carpet. If any stain remains, repeat the wetting and blotting process until it's gone.
- Remove stubborn stains
If the dishwashing detergent doesn't remove the stain, replace the dishwashing solution with a dilute ammonia solution. Apply the solution and blot.
- Dry with a fan
Direct the air from a fan on the wet spot to ensure complete drying.