How does pet waste acidity accelerate weathering in marble outdoor pet waste bins?

Pet waste acidity significantly accelerates the weathering process in marble outdoor pet waste bins through chemical reactions. Marble, primarily composed of calcium carbonate, is highly susceptible to acidic substances. When pet urine and feces, which contain uric acid and other acidic compounds, come into contact with the marble surface, a chemical reaction occurs. This reaction dissolves the calcium carbonate, leading to erosion, pitting, and a loss of the smooth, polished finish. Over time, this acid attack weakens the structural integrity of the bin, making it more prone to cracks and physical breakdown from other environmental factors like rain and temperature fluctuations. The result is accelerated deterioration, manifesting as etching, staining, and a roughened texture, which compromises both the bin's appearance and its longevity. Regular cleaning can mitigate but not entirely prevent this inherent vulnerability of marble to acidic pet waste.