Red wine, red beverages, urine, blood, ect. can cause permanent stains if not cleaned immediately.
Vacuum to remove all abrasive soils that can cut & slice the fiber causing premature wear. Remember, much of this soil is not visible to the eye, so even if you carpet looks clean it still needs vacuuming.
by a professional, certified firm. For heavy traffic areas, cleaning may be required more often. Proper, professional cleaning will not leave a sticky residue behind and can be done as many times per year as needed. Many stain resist warranties require professional cleaning every 2 years.