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A robot mop with dirty water tank keeps clean and dirty water completely separate. Unlike basic models that drag diluted grime back across your floors, these units store dirty water in a dedicated tank. This means genuinely cleaner floors with every pass. Most tanks hold 200–300ml of dirty water before needing to be emptied. Look for models with auto-refill clean water tanks too. Ideal for hard floors including tile, laminate and vinyl. Capacity, suction power and mopping frequency settings vary considerably between models.
