Join Austin Allred, owner of Royal Dairy from Washington, in person or online at World Dairy Expo for a Virtual Farm Tour & Live Q&A. With 6,500 milking cows, Austin will explain how BioFiltro’s. worm-powered wastewater system removes 90%-99% of the nutrients from his green water, builds soil by generating worm castings, and produces 6-8 carbon credits per milking cow. DCC Waterbeds were recently installed in the eight freestall barns to provide cow comfort that is low-maintenance to allow for a cleaner, simpler manure waste stream.