Which of the following is not a contributing factor to silverfish infestations?

Silverfish are pests that thrive in humid, dark environments, making certain factors conducive to their infestations. Among the options, food waste is not a primary contributing factor for silverfish infestations.

Silverfish primarily feed on carbohydrates found in materials such as paper, glue, and some food items. While they may eat starchy foods, the presence of food waste itself is not as critical to their survival as environmental factors like moisture and shelter. Consequently, in the context of how they thrive, the type of waste generated (like food waste) does not directly contribute to creating an environment where silverfish would proliferate.

On the other hand, standing water, pipe leaks, and shade trees that overhang roofs create conditions that provide the necessary moisture and dark places where silverfish like to dwell and reproduce. Excessive moisture fosters ideal environments for these pests, as they require higher humidity levels to survive. Therefore, while food waste can attract various pests, it is not a significant factor in the increase of silverfish populations.