more pronounced. This is particularly common in homes with forced air heating or cooling systems, which can increase the movement of air—and therefore particles—throughout the home.
3. Common Household Sources of the Fine Particles Causing the Stains
The fine particles that contribute to filtration soiling can come from a variety of sources within the home. Common culprits include dust, pet dander, pollen, and smoke from candles or fireplaces. In urban areas, soot from car exhaust or industrial pollution can also play a role.
Cooking fumes and volatile organic compounds (VOCs) from household cleaning products or new furniture can also contribute to the problem. These particles are often too small to be seen with the naked eye but can accumulate over time, especially in areas with limited ventilation.
4. When Dark Carpet Edges Might Indicate Mold Instead
While filtration soiling is a common cause of dark carpet edges, there are instances
