Booklouse

Damp, dark, and warm environments with high humidity, often found in libraries, pantries, and behind wallpaper.

Microscopic fungi, mold, spores, starch, and organic debris found in glue, paste, and stored grains.

They are wingless, fast-running insects that thrive in humidity over 60%. They reproduce rapidly and are most active in warm, damp months.

They are harmless to humans and pets, but can be a nuisance and cause minor damage to books or contaminate stored dry goods; they serve as indicators of high humidity.