An antimicrobial intervention for the production of ground meats by treating the exterior of the meat trimmings with an antimicrobial agent before grinding. An apparatus for applying an antibacterial agent to meat trimmings includes a closed or essentially closed chamber for limiting the escape of the antimicrobial agent to the environment during antimicrobial treatment of the trimmings, an entrance system for introducing trimmings into the closed chamber while preventing or significantly limiting the antimicrobial agent from escaping into the environment, an application system for applying an effective amount of the antimicrobial agent to exposed surfaces of the trimmings in the closed chamber; and an exit system for removing the treated trimmings from the closed container while preventing or significantly limiting the escape of antimicrobial agent into the environment.