Some say Silverfish roamed the earth with the Dinosaurs, which might make you think they are hard to get rid of. Generally, however, a combination of insecticidal treatment, with effective management to any damp problems, which attract the Silverfish, will result in total eradication of a silverfish infestation. Your friendly household spider will also keep them at bay.
A silverfish is a small, wingless insect in the order Zygentoma. Its common name derives from the animal’s silvery light grey color, combined with the fish-like appearance of its movements.