Occasionally I find an insect inside my home and don’t worry too much about it, just figure it found its way inside in error, and politely relocate it to the out of doors. But when I found several silverfish in my seldom used extra bathroom, I knew they were an indicator something was amiss.
Silverfish live in damp or wet areas and love rotting wood. They do not like to live on the dry tile of this room. Upon further inspection of the basement just below that bathroom, we found dripping water. Oh no, the joys of home maintenance. The wood below the drain of the shower was wet and soft. Perfect conditions to house silverfish. They are also known as Firebrats in some areas of the country, are actually a different species, but are very much alike. The Silverfish’s Latin name is Lepisma saccharina.
Silverfish feed on high starch sources such as wallpaper and book-bindings and the used in them. They will eat cereal grains, paper and wood. They want a moist environment, especially moist ply wood.
Silverfish have gradual metamorphosis, starting with an egg which hatches into a nymph. Several molts take place until they reach maturity. Silverfish can live up to six years! Eggs are laid near a food source in cracks and crevices. As long as moisture is abundant, these insects will live.
Which brings me to control measures. First we had to fix the leak that caused all of the wetness. Next we have to dry out the area with fans and dehumidifying. It is a good idea to disinfect any surfaces to retard a secondary mold problem. Once area is dry, cleaning by vacuuming is recommended. Reduce any clutter around the home, especially papers and books to reduce the food sources. Seal any cracks in foundations or walls, and around pipes to keep silverfish from entering the home in the first place. Insecticides containing boric acid or pyrethroids labeled for indoor use can be used in areas where silverfish are found.