Springtails infest buildings that have:

Springtails, a group of small, wingless insects, thrive in environments that provide high levels of moisture. They are often found in damp areas, as their biology and behavior are closely tied to the availability of water. When buildings exhibit constant high humidity levels, it creates an ideal habitat for these pests, allowing them to feed on decaying organic matter, mold, and other moisture-rich materials.

In contrast, low humidity conditions do not support springtails, as they would struggle to find the moisture necessary for their survival. Similarly, while stored furs and spring mechanisms might attract other types of pests or have their specific nuances, they do not create the environmental conditions that specifically favor springtail infestations.