a method and composition for a film forming antimicrobial material for animal skin wherein said film is resistant to body fluids and provides long term protection against microorganisms . the composition comprises an alcohol soluble carboxylated polycrylate wherein is added an antimicrobial agent , a topical adhesion promoter , and a difunctional amide which crosslinks said polymer as said solvent evaporates . the topical film so formed does not interfere with respiratory processes and is inert to blood , urine , gastric acids , perspiration , saline solutions and the like . once formed , said film will not resolubilize in alcohol or other common sterilants . said topical film adheres to tissue and is resistant to physical removal and to abrasion . film longevity is in excess of 2 days . substantial protection is provided against pathogenic bacteria and fungi often implicated in hospital infections and thus can serve as a presurgical dressing , preparation agent , as well as in post - surgical prophylaxis .