Table 2 lists many of the insecticides available for silverfish control. Treat cracks and crevices around and behind baseboards, shelves, bookcases, closets and windows. Pay special attention to void spaces inside walls, decorative ceiling beams and curtain rods. In addition, basements and attics should be inspected and may need to be treated. When treating the attic, void spaces, and large cracks, use an insecticide dust.
Aerosol sprays work well on crawling insects, surface applications, and small cracks and crevices.
Beware that aerosols applied to raw concrete are absorbed into the pores and rapidly lose their effect. Warning on the use of chemicals Before using any chemical, please read the label carefully for directions on application procedures, appropriate rate, first aid, storage, and disposal. Make sure that the chemical is properly registered for use on the intended pest. Insecticides labeled for controlling silverfish and firebrats. This guide is also available in Portable Document Format.