The answer to 'what causes silverfish' is that silverfish are attracted to damp, humid environments and feed on organic materials like paper, cardboard, and fabrics. They are small, wingless insects that thrive in dark, undisturbed areas like bathrooms, basements, and attics. Silverfish get their name from their distinctive silvery-gray color and fish-like movements.
Silverfish are nocturnal and prefer temperatures between 70-80°F. They reproduce quickly, with females laying up to 60 eggs at a time. Silverfish feed on a variety of materials, including starches, sugars, and even the glue in book bindings. Their presence is often a sign of excess moisture or poor sanitation in the home.