The answer to 'how to prevent silverfish' is to use a combination of prevention methods and targeted treatment. Silverfish are attracted to damp, dark environments and feed on materials like paper, clothing, and wallpaper. To prevent them, keep your home clean and dry, seal cracks and crevices, and use dehumidifiers or fans to reduce moisture levels.
You can also use natural repellents like diatomaceous earth, essential oils, or boric acid to deter silverfish. If you have an active infestation, use targeted insecticide sprays or baits to eliminate the pests. Be sure to follow all label instructions and take safety precautions when using any pest control products.