Final answer:
Sodium hypochlorite, widely known as household bleach, is the most common chemical used to clean blood spills due to its strong disinfectant properties.
Step-by-step explanation:
The most common chemical used to clean blood spills is sodium hypochlorite, which you may know as household bleach. Sodium hypochlorite is effective because it acts as a disinfectant, bleaching agent, and can break down proteins, making it ideal for cleaning up biological fluids like blood. It's important to use it according to safety guidelines due to its caustic nature and potential to release chlorine gas if improperly handled. Neutral washing agents and all-purpose cleansers can be used for general cleaning, but for disinfecting and ensuring that all traces of blood are removed, bleach is the recommended standard.