Dark brown in color and measuring about nine millimeters, the dermest of the bacon has a yellowish stripe punctuated by six dark spots on the back. During the winter season, the adult lives under the bark of trees and generally takes refuge inside homes from May. The female will need an additional month, in June, to lay her eggs in the cracks and crevices, never far from food. She lays between 100 and 175 eggs, in groups of six to eight, which take about 12 days to hatch. Lard rash feeds primarily on cheese, bacon, ham, lard, animal feed, feathers, skin and hair. They can also invade warehouses and attics. Their life cycle is two to three months.