A process for inhibiting the build-up of infectious material on a surface. More particularly, the invention relates to a process for controlling a hospital acquired infection. The process comprises applying to the surface a film forming composition comprising at least about 50% w/w of a liquid polymeric silicone, at least one first surfactant, wherein said first surfactant is hydrophobic, and at least one biocide, to form a film on said surface and cleaning the film with a detergent composition comprising at least one second surfactant, the second surfactant yielding in aqueous solution an air/water surface tension of less than about 24 dyne/cm.
