Centipedes, millipedes and sow bugs may all occasionally get into the home.
Overwintering,excessive rainfall, and moisture may be some reasons . Centipedes, millipedes and sow bugs can leave the soil and leaf litter and crawl into homes, sometimes in very large numbers. This usually occurs in the late summer or early fall, as they are searching for protected places to overwinter. In the case of excessive rainfall, their normal environment may become flooded and force them to seek shelter in less moist areas.
The cellar spider is often found in damp locations like basements, crawl spaces and cellars, which is how it got its common name. Cellar spiders have small bodies with long, thin legs and are often confused with harvestmen, the true daddy longlegs that are not actually spiders. There are two groups of cellar spiders, the long-bodied cellar spiders that have legs up to two inches long and the short-bodied cellar spiders whose legs are about ½ inch long. Cellar spiders are tan or gray in color. Like all spiders, they have eight legs.
During the day, earwigs tend to hide out under rocks, bark or organic debris or stow away in other dark, damp places. However in some conditions, like a drought, earwigs may seek out damp, dark shelters inside of your home.
Indoors, earwigs may be attracted to materials that offer a source of cellulose and are in the process of decaying. If you have stacks of old boxes, books or papers laying around in a dark, cool basement, you might as well set out a tiny welcome mat for earwigs. They may also seek out food sources in your kitchen and tend to be attracted to oily, greasy or sweet foods.