two silverfish feeding on an old book


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What do silverfish look like?

Silverfish are flat, tear-drop shaped silver to pearl-gray insects that measure approximately ¾ of an inch in length, not including their tail. They are equipped with two long antennae, six legs, three tail bristles, and are covered with scales. Capable of running very fast, they are also identifiable by their fish-like movements. 

silverfish inside house

Pest Facts

Did you know?

  • Silverfish are known for their extreme speed.
  • When silverfish run, their bodies create a movement that resembles the swimming motion of fish.
  • It's quite common to find silverfish stuck in tubs and sinks.

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Biology and behaviors of silverfish

Silverfish have a high reproduction rate with females laying over 100 eggs during their lifespans. Eggs are laid either singularly or in small clusters in crack and crevices. It takes approximately 4-6 weeks to complete the life cycle from egg to nymph to adult and they continuously molt throughout their entire lives.

Primarily active at night, silverfish generally try to avoid light but prefer high humidity environments. 

Where are you likely to find silverfish indoors?

Bathrooms, laundry rooms, attics, garages, and basements are common places to find silverfish but they may also hide in wall voids, closets, and under sinks. 

What do silverfish eat?

Silverfish prefer a diet high in carbohydrates and protein. This includes cereal and other dried foods but also paper, cardboard, fabrics, and even glue in book bindings. 

Signs of a silverfish infestation

When silverfish feed, they often leave behind holes, notches, yellow stains, scales, and feces that resemble black pepper. 

Are silverfish dangerous?

Since they do not bite or spread disease, silverfish are not considered a threat to human health. However, they may cause damage to belongings. 

How do you get rid of silverfish?

If you’re dealing with silverfish in or around your home, contact Greenway Pest Solutions for treatment. Our local pest control company offers effective home pest control services that eliminate insects and rodents and prevent them from re-infesting. 

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Gerardo P. came to do my service today and did a wonderful job! Always takes good care of the house. He did the frontyard back yard and the inside of the house in no time! Phenomenal service!
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