ECOLOGO Certified to Biologically-based Cleaning and Degreasing Compounds. CCD-110/UL 2792 certified. Professional strength bioactive cleaner for petroleum hydrocarbons. Contains select strains of microbes known for their ability to rapidly digest petroleum hydrocarbons including chlorinated solvents. Dilution: 1:32 to 1:64. Recommended for use in parking garage floors, mechanic's bays, bus wash stations, drain lines, oil separators, and remediating small to medium size hydrocarbon spills. Four gallons per case.