What can lead to the deterioration of wool fibers in carpet?

Wool fibers are sensitive to various environmental factors, which can significantly impact their durability and appearance. Each of the factors listed contributes to the deterioration of wool in different ways.

Excessive moisture can lead to mold and mildew growth, which not only creates unpleasant odors but can also break down the fibers over time. Wool is naturally absorbent, but when it becomes excessively wet or remains damp for prolonged periods, it can lose its structural integrity.

High pH levels can also negatively affect wool fibers. Wool is most stable within a specific pH range. When exposed to alkaline substances or cleaning agents that have high pH levels, the cuticle scales of the wool fibers can become damaged, leading to a weakened carpet and resulting in fuzzing or shedding.

Extreme heat presents another risk to wool fibers. High temperatures can cause wool to shrink or become brittle. The structure of the fibers can be altered by heat exposure, leading to a loss of texture and resilience.

Given that all these factors can individually cause deterioration, the correct choice encompasses the comprehensive effects of excessive moisture, high pH levels, and extreme heat on wool fibers. Understanding these risks is crucial for maintaining the longevity and appearance of wool carpets.