A charge nurse is providing teaching to a newly licensed nurse on how to clean surfaces contaminated with blood. Which of the following agents should the nurse include in the teaching?

Choice A reason: Hydrogen peroxide has limited effectiveness against bloodborne pathogens and is not the recommended agent for cleaning blood-contaminated surfaces. It may disinfect minor wounds but is not suitable for environmental cleaning of biohazard spills. Choice B reason: Isopropyl alcohol is effective against many bacteria and viruses but is not recommended for cleaning large blood spills. Alcohol evaporates quickly and does not reliably inactivate all bloodborne pathogens such as hepatitis B or HIV when used on contaminated surfaces. Choice C reason: Chlorine bleach is the recommended agent for cleaning surfaces contaminated with blood. A diluted bleach solution (usually 1:10 ratio) effectively kills bloodborne pathogens, including hepatitis B, hepatitis C, and HIV. It is widely used in healthcare settings for environmental decontamination. Choice D reason: Chlorhexidine is an antiseptic used for skin preparation and wound cleansing. It is not appropriate for cleaning environmental surfaces contaminated with blood. Its use is limited to patient care, not environmental disinfection.