What is the primary risk of using water-based cleaners on certain upholstery items?

The primary risk of using water-based cleaners on certain upholstery items is the potential for rusting of metal components. Upholstery often contains various metal parts, such as frames, springs, and decorative elements. When a water-based cleaner is applied, moisture can seep into these metal components, especially if the cleaning method inadvertently introduces excess water. This moisture can lead to corrosion over time, causing rust and deterioration of the metal parts, which can compromise the structural integrity of the upholstery.

Other risks, while they may occur under specific circumstances, do not capture the same level of concern regarding metal components. Upper fabric lifting, fading of colors, and pilling of fibers are certainly issues that can arise when cleaning improperly or using unsuitable cleaning agents, but the immediate and potentially damaging effect of rust is more critical to consider when using water-based cleaners on upholstery with metal parts.