A California grocery meat packaging plant generates 100,000 gallons per day of wastewater containing animal fats and grease. The wastewater collects in an aerated holding pond (one day retention time) prior to discharge into the city sewer system. A microbe-based product from Grace Dearborn was used in the past but had little success as BOD and TSS readings were increasing to an average of 300 mg/l and 1,500 mg/l, respectively. BioWorld Waste & Odor Treatment was added twice a week to digest solids and lower BOD measurements. Within one week, the BOD and TSS readings were reduced to an average of 20 mg/l and 30 mg/l, respectively. On-going treatment has reduced the fats and grease in the system and maintained the low BOD and TSS readings.