All About Silverfish

Silverfish Identification Guide

Physical Characteristics

Silverfish are small, wingless insects with elongated, teardrop-shaped bodies. They are typically silver or gray in color and have a metallic sheen. Their bodies are covered in fine scales, giving them a slippery appearance. They have three long, bristle-like appendages extending from their rear and two long antennae on their heads. Adults can reach up to 3/4 inch in length.

Common Species

• Lepisma saccharina (Common Silverfish)

• Ctenolepisma longicaudata (Gray Silverfish)

• Ctenolepisma lineata (Four-lined Silverfish)

Silverfish Behavior and Biology

Silverfish are nocturnal and prefer dark, humid environments. They are scavengers, feeding primarily on carbohydrates such as paper, glue, fabric, and even food crumbs. They can survive for long periods without food but require moisture to thrive. These pests reproduce slowly, with females laying small clusters of eggs in cracks and crevices. Their development from egg to adult can take several months to years, depending on environmental conditions.

How We Treat for Silverfish

Our silverfish treatment strategy follows a similar approach to our millipede and centipede control:

• Inspection - Our licensed technicians conduct a thorough inspection, focusing on areas where silverfish are most active, such as basements, attics, and bathrooms. We look for entry points, moisture issues, and food sources.

• Interior Treatment - We apply targeted treatments to baseboards, cracks, and crevices using a non-repellent insecticide designed to control silverfish populations without scattering them further into the home.

• Exterior Treatment - We apply granular or liquid insecticides around the home’s perimeter, particularly in moisture-prone areas like mulch beds and foundation gaps.

• Moisture Reduction & Exclusion - Our technicians advise homeowners on reducing humidity levels by using dehumidifiers, improving ventilation, and sealing entry points to limit silverfish access.

• Ongoing Maintenance - Silverfish are persistent, so we recommend quarterly treatments to maintain control and monitor activity. This ongoing care helps prevent reinfestations.