Which cockroach is commonly found in attics?

The Smokey brown roach is known for its preference for dark, moist environments, which can often include attics, especially if there are favorable conditions such as decaying wood or access to shelter. This species thrives in high-humidity areas, and attics may provide the necessary conditions for nesting or resting during the day.

In contrast, while the German roach often infests indoor environments, particularly kitchens and bathrooms, it typically does not favor attics. The brown banded roach is more commonly found in warmer indoor areas, and the Pennsylvania woods roach is usually found outdoors in wooded or leaf-littered areas, making them less likely candidates for an attic infestation. Thus, the Smokey brown roach stands out as the most commonly found species in attics.