The varied carpet beetle can be a serious household pest. In its larvae form, it feeds on natural fibers including clothing, furniture, and carpets. As you can imagine, it damages what it eats. The varied carpet beetle has an unusually long life cycle for an insect, spanning from 1-3 years. Infestations can be prevented by regularly vacuuming, using moth balls in closets, and removing old bird and insect nests attached to the house or building. If you find that you have a varied carpet beetle infestation, the use of insecticides is a very effective way to rid your home of these pests.