What type of environments do internal feeders typically thrive in?

Internal feeders are pests that primarily live and feed within the materials they infest, which can include various products. The best environment for these pests tends to be stored products, particularly grains, where they can thrive undisturbed. The inside of grains provides a dark, sheltered, and nutrient-rich environment that supports their growth and reproduction.

Stored products like grain are ideal because they not only offer a food source but also the necessary conditions—such as moisture content and temperature—that internal feeders require to thrive. Such pests can cause significant damage to food supplies, making it crucial to manage and inspect these areas regularly.

Other environments listed, such as wet and humid areas or open fields, may support different types of pests but not specifically cater to the needs of internal feeders. Similarly, areas with high sunlight exposure are not conducive to internal feeders, as they prefer concealed environments where they can avoid predators and environmental stress. Thus, the most accurate answer focuses on stored products, as it directly correlates with the biological and ecological needs of internal feeding pests.