If it is wool, be sure to get to the dry cleaners. If it is chemical fiber, brush with agent at home (1) multi-layer structure distribution of carpet stains, dirty carpet stains in the A. level, which makes it easy to bury the stains, dirt. Old stain is not only on the surface, but also deepen into the layer of fiber taxture Lime, sand infiltration,2. three supporting layer becomes the hidden dirt, continuing to damage the carpet fiber. The carpet was constantly rubbing, stains, dirt will be buried more deeply . B. carpet stains, dirt classification: A. water and dry stains, dirt and stains are mostly water-based and dry substances, including dust, sand, starch, soft drinks, tea, fruit juice stains accounted for about 80%-85% of all dirt, especially fine dust, cast of life and work, mostly adhere to the carpet surface. The larger particles of dirt will slide on the supporting layer. B. oil based stains, dirt (including animal and plant oil, cosmetics, shoe polish, pen oil etc.). If it is wool, be sure to get to the dry cleaners.