Larvae hatch from eggs in the spring and early summer, often in the nests of birds or around stored fabrics.  Larvae feed on natural fibers throughout their development, eventually experiencing a dormancy period (also known as diapause) prior to pupation into the adult stage.  Adults emerge between late May and early August, flying to and feeding on the pollen of flowering plants.  During this period, mating occurs, eggs are laid and the cycle begins anew.

The larvae are a common household pest.  Adult beetles usually lay their eggs in air ducts, in closets, under furniture or under baseboards.  Once hatched and until they pupate into adults, the larvae hide in dark, undisturbed areas and feed on organic material. The larvae are thus responsible for the damage of various items, such as furniture, clothing, blankets, furs and carpets.