Provide a kind of method that microbial load is reduced in a place on the skin of a main body. The method includes: one dressing of field terrestrial applications on the skin of main body, to be wherein performed the medical procedure for being related to violating skin. As used in method, dressing include a self-adhesion silicone gel piece its include at least: 5 wt% of about 95 wt% silicone and the particle of antibacterial agent being up to about dispersed in silicone. Dressing assembles the silicone gel piece of the skin for main body of being related and is left in place to allow antibacterial agent to be diffused on place.