What is wicking and why does it occur?
It is the process by which liquid is drawn up through an object by way of capillary action. Reappearing spots and rapid resoiling can both be results of wicking. These are spots which have apparently been removed but which reappear, either upon drying or over time. A spot remover is used to get rid of a spot. The remover is designed to detach the soil from the fiber and suspend the soil in its liquid state. Then, through a removal process like blotting or a hand held extractor, the spotting agent and the soil are removed. However, if all the liquid is not removed, the soil remains suspended. Over a short period of time, the liquid is drawn up the carpet fiber along with the soil. When the liquid reaches the top of the strand, it evaporates leaving behind the soil which creates a reappearing spot.
