Cave crickets are omnivores that prefer organic waste and fungus, although they may occasionally hunt other insects. They are nocturnal insects that are not attracted to light. In the wild, they can be found under fallen tree trunks or rocks, in high grass, and even in caves and caverns. Basically, their preferred habitat is any cool, dark spot that maintains a high level of moisture.
These insects come inside when outdoor conditions make things uncomfortable (too hot and dry). In the home, cave crickets can live off natural fabrics and paper products. But they rarely reproduce inside because they need a high moisture environment for reproduction.