The answer to 'carpet cleaning buildup' is that it is a common issue caused by a buildup of dirt, dust, and other debris in the carpet fibers. Symptoms include a dull, dingy appearance, increased staining, and a feeling of roughness or texture in the carpet. The best solution is to have the carpet professionally cleaned on a regular basis, typically every 12-18 months, to remove this buildup and restore the carpet's appearance and feel.
For homeowners, regular vacuuming and spot cleaning can help manage buildup between professional cleanings, but deep, thorough cleaning is best left to the professionals. They have the specialized equipment and expertise to effectively remove all the accumulated dirt and grime from the carpet without causing damage.