What should be placed over a spot during drying to prevent soil wicking?

Using a dry towel with weight placed over a spot during the drying process is essential for preventing soil wicking. Wicking occurs when moisture, along with soil and stains, rises back to the surface of the carpet as it dries. By placing a dry towel on the spot, you absorb the moisture from the carpet while simultaneously preventing any remaining soil from migrating upward. The weight helps to ensure that the towel maintains contact with the carpet, maximizing the moisture absorption and reducing the chances of re-soiling as the carpet dries.

In contrast, options like a wet towel could actually exacerbate the issue by introducing additional moisture. Plastic wrap would not allow for any moisture absorption and might create an environment that retains moisture, fostering mold or mildew growth. A carpet pad is generally used to cushion or protect the floor underneath but does not provide the necessary absorption or weight features needed to effectively manage soil wicking during the drying process.