Booklouse (or Psocid)

Damp, humid environments like bathrooms, kitchens, basements, wall voids, and anywhere mold grows. Often found on books, paper, wallpaper, or stored grains.

Microscopic molds, fungi, starch, glue (like book bindings), and dead organic matter.

They do not bite or fly (many indoor species are wingless). They are fast-moving and seek out moisture. Populations can explode quickly if high humidity allows mold to grow.

Risks: They are a nuisance pest that can contaminate stored food products and damage paper goods or books. They can trigger allergies in some people. Benefits: They do not bite humans or pets, carry diseases, or damage structural wood.