Durokleen forms a potent antimicrobial layer on surfaces you treat, electrostatically binding at a molecular level to form a stable, long-lasting barrier. The outside layers of microbial cells are made up of net negatively-charged lipid (fatty) molecules. The positively charged lipophilic tails of molecules that form the Durokleen coating destroy offending microbes by fatally interacting both physically and chemically with the outer layers of the microbial cells.