Hygen Clean Water System cleans the water so you can clean the floor. Built-in water filter improves productivity, reduces water and chemical usage, and creates healthier and safer environments. One bucket fill provides clean water all day, eliminating unproductive trips to the janitor closet. Twin-roller design provides optimized wringing efficiency, requiring 50 percent less force to wring than a traditional side press wringer. Built-in scrubbers remove at least 25 percent more dirt from the mop. Adjustable moisture level allows you to select desired mop dampness for better cleaning results. Floor drain lets you empty bucket without lifting, reducing body strain. Back flushable filter is easy to maintain. Innovative bucket is compatible with all Rubbermaid Commercial janitor carts.