The amount of dirt and grime present in laundry before washing determines the necessary wash cycle settings. This assessment considers factors like the visibility of stains, the garment’s original color, and the type of fabric. For example, heavily soiled work clothes require a more intensive wash than lightly worn shirts.
Accurately gauging laundry soiling optimizes cleaning effectiveness, prevents damage to fabrics from excessive agitation or harsh detergents, and conserves resources like water and energy. Historically, judging laundry cleanliness relied on visual inspection and experience. Modern washing machines sometimes incorporate sensors to automate this process, leading to more efficient and precise cleaning cycles.