Your carpet is a haven for dust mites, mold, pollen, silt, dust, pet dander and allergens of all shapes and sizes, and this is a good thing! Carpet traps these allergens and helps filter the air indoors. However, since carpeting can't release these particles, the combination of vacuuming and regular, deep cleaning is needed to remove them. Without regular, professional deep cleaning, fibers become matted down with dirt and oil. Over time, these soils destroy carpet.