Centipedes are arthropods, which are organisms with an exoskeleton, segmented body, and jointed legs. These pests have elongated bodies that resemble worms with legs. Centipedes are most active at night and spend the majority of their time hidden. Centipedes thrive in moist, humid environments. They are more likely to be found in wet areas of your house or company, like bathrooms, kitchens, laundry rooms, or basements.