The most frequent and detrimental mistake people make when mopping floors is using dirty mop water throughout the entire cleaning process. Once the mop head is rinsed into the bucket a few times, the water transforms into a murky solution loaded with loosened dirt, oils, and bacteria; continuing to mop with this dirty water simply reapplies a grimy film back onto the floor surfaces. Other common errors include using excessive water on sensitive hardwood floors, applying harsh chemical detergents that strip protective finishes, and neglecting to vacuum or sweep loose debris beforehand.