The answer to 'carpet cleaning stain removal' is to first identify the type of stain and treat it accordingly. Common carpet stains include food and drink spills, pet accidents, grease, and mud. Effective stain removal often requires a combination of blotting, spot cleaning, and professional deep cleaning.
For fresh stains, blot the area with a clean, absorbent cloth or paper towel to remove as much of the spill as possible. Then, use a carpet cleaner or mild detergent solution to gently scrub the stain, being careful not to rub it in further. Allow the solution to sit for a few minutes before blotting again. For set-in stains, a more thorough treatment may be needed, such as using an enzyme-based cleaner or calling in a professional carpet cleaning service.