Silverfish

Dark, humid indoor places such as bathrooms, basements, and wall or floor gaps; some species also live outdoors.

Feeds on starchy and sugary materials, including paper, book bindings, glue, and crumbs.

Fast-moving, wingless, and usually active at night; hides in cracks and sheds its skin throughout life.

Harmless to people and pets, but can damage paper, fabrics, and stored dry goods; poses no significant ecological benefit indoors.