Which factor can contribute to rapid re-soiling of cleaned carpets?

Using low-quality cleaners is a significant factor that can lead to rapid re-soiling of cleaned carpets. When cleaning products lack the appropriate surfactants, emulsifiers, or other effective agents, they may not adequately remove soil and residues from the carpet fibers. If residues from these cleaners are left behind, they can attract dirt and grime, leading to a quicker buildup of soil after the carpet has been cleaned. Additionally, inferior cleaners might not effectively break down the oils and soils present, allowing them to remain in the carpet. Consequently, the carpets become dirty more quickly after cleaning, resulting in the need for more frequent maintenance and cleaning intervals.

In the context of the other factors: high humidity can influence drying times and potentially contribute to mold growth, frequent heavy traffic increases the likelihood of dirt being tracked in, and lack of ventilation can lead to odors or poor drying, but these do not directly result in the immediate re-soiling of cleaned carpets as low-quality cleaners do.