A highly concentrated biological laundry detergent that contains a synergistic blend of surfactants, anti-redeposition agents, optical brightening agents, water softeners and enzymes. It has been extensively evaluated and been found safe to use with Ozone disinfection laundry systems. It will clean effectively but will not adversely affect the germ-killing power of the Ozone. It has been designed so it can be used through an automatic dosing system, calibrated to consider the water hardness and the degree of soiling encountered. This helps to eliminate waste by metering in the correct dose every time. Low fragrance hence may be used for overalls in food production areas.