The effective use of disinfectants constitutes an important factor in preve
nting hospital-acquired infections. Surfaces are considered non-critical it
ems as they come in contact with intact skin. Use of non-critical items or
contact with non-critical surfaces carries little risk of transmitting a pa
thogen to patients. Thus, the routine use of disinfectants to disinfect hos
pital floors and other non-critical items is controversial. However, surfac
es may potentially contribute to cross-transmission by acquisition of trans
ient hand carriage by health care personnel due to contact with a contamina
ted surface or by patient contact with contaminated surfaces or medical equ
ipment. This paper reviews the epidemiological and microbiological data reg
arding the use of disinfectants on non-critical surfaces, It concludes that
while noncritical surfaces are uncommonly associated with transmission of
infections to patients, one should clean and disinfect surfaces on a regula
rly scheduled basis. (C) 2001 The Hospital Infection Society.