What to do if the Xiaomi Robot Vacuum S40 Pro cannot remove stubborn stains while mopping?

If the Xiaomi Robot Vacuum S40 Pro cannot remove stubborn stains while mopping, please refer to the following information:
  1. If stubborn stains cannot be removed while mopping, pre-wet the area and consider manual cleaning assistance for better results.
  2. Run the mopping function multiple times over the same area to improve stain removal.
  3. Make sure the mop pad is clean and not overly worn. Replace it if necessary for better cleaning performance.
  4. Spray a small amount of water or mild floor cleaner directly on the stain before starting the robot vacuum.
  5. Ensure the water tank has enough clean water, as a dry mop cloth will reduce stain removal effectiveness.

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