Walking repeatedly over the same path changes pile direction and compresses yarn. The altered fibers reflect light differently and may appear dark even after cleaning. Soil from footwear and skin oils can also collect in traffic paths. Professional cleaning may remove soil, but permanent crushing or shading can remain.

Key considerations

  • dark traffic lanes carpet
  • carpet looks dirty after cleaning
  • worn carpet path
  • carpet traffic lanes
  • dark carpet paths
  • carpet wear
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