In 2003, CDC and HICPAC released recommendations for cleaning and disinfecting strategies for environmental surfaces in patient care areas which included the following: Use barrier protective coverings as appropriate for non-critical equipment surfaces that are 1) touched frequently with gloved hands during the delivery of patient care; 2) likely to become contaminated with blood or body substances; 3) difficult to clean (e.g., computer keyboards). Category II Category II. Suggested for implementation and supported by suggestive clinical or epidemiologic studies, or theoretical rationale. References extracted from CDC and HICPAC 2003 release Guidelines for Environmental Infection Control in Health-Care Facilities page 117 section B and 133 Section E-1-D-3. http://www.cdc.gov/ncidod/hip/enviro/Enviro_guide_03.pdf