These slender, wingless insects are common in homes. The Silverfish are covered with shiny and silver or pearl-gray scales with three long tail-like appendages and two threadlike antennae. The scales help them escape the grip of ants and spiders. Silverfish cause damage by eating foods, cloth or other items high in protein, sugar or starch. They eat cereals, moist wheat flour, paper on which there is glue or paste, book bindings, wallpaper, starch in clothes and linens.