A composition for eliminating an infection in a body space or cavity or on the epidermis of the body of the user is formed from an antimicrobial active agent which is, preferably, a fatty acid or mixture of fatty acids, an organic acid and a hydrotroper solubilizer. This composition in concentrate form can be diluted or admixed with the deionized, pyrogen-free water to form an effective use solution. The active ingredients herein are either UPS or food grade components.