Which action is crucial for effective cleaning of upholstery and fabrics?

Ensuring complete removal of soils is essential for effective cleaning of upholstery and fabrics because any remaining dirt or contaminants can cause issues such as discoloration, odors, and deterioration of the material. Soil trapped within the fibers can attract additional dirt, leading to a quicker re-soiling of the upholstery, which compromises the overall cleanliness and appearance over time.

Additionally, failing to remove all soils can lead to long-term damage, as certain substances may react with the fabric or cleaning agents used, causing staining or weakening of the fibers. A thorough cleaning process that focuses on complete soil removal helps maintain the integrity and lifespan of the upholstery, ensuring that it stays fresh and aesthetically pleasing for a longer period. This approach is fundamental to any professional cleaning standard as outlined by the IICRC.