ListShield™ is an all-natural, non-chemical antimicrobial preparation for controlling the foodborne bacterial pathogen Listeria monocytogenes. The active ingredients of ListShield™ are naturally occurring bacteriophages that selectively and specifically kill L. monocytogenes. ListShield™ is specifically designed for treating foods that are high risk for L. monocytogenescontamination. It can also be used to eliminate or significantly reduce the levels of L. monocytogenes on non-food contact equipment, surfaces, etc. in food processing plants and other food establishments. ListShield™ is ideal for use in HACCP programs that have identified L. monocytogenes control as a potential problem.