Silverfish are wingless and are silvery to brown in color because their bodies are covered with scales. Adults are about 3/4 inch long, flattened from top to bottom, elongated and oval in shape. They have three long tail projections and two long antennae.
Once a female reaches adult stage she will continuously lays eggs and may lay over 100 during her lifetime. She may lay them in small groups or individually. It takes 4 to 6 weeks for silverfish to go from an egg to adult. Because they go through a simple metamorphosis (egg, nymph, adult) the immature stages look the same as adults.
Silverfish prefer temperatures between 70 to 80 degrees F. They also prefer to feed upon carbohydrates and proteins. Things like flour, dried meat, paper, cardboard and even glue. They are fast runners and can be found anywhere from the basement to the attic.
Silverfish are primarily a nuisance pest that can be controlled with an inside/outside treatment and attic dusting.
For long term control an every other month or quarterly treatment would be needed.