You clean up an espresso spill, muddy footprint, food stain, or pet accident from an area rug, and the spot seems to disappear. The rug may look clean while it is still damp, but a few hours or even days later, the same stain gradually returns. This does not always mean the area rug was cleaned incorrectly. In many cases, part of the spill remains trapped deep within the rug fibres, foundation, or backing. Using too much cleaning solution, incomplete extraction, and slow dryi