The casemaking clothes moth prefers products of animal origin, secondarily feeding on products of plant origin. It is a pest of woolens, rugs, feather, felts, skins, spices, drugs, furs, taxidermy mounts, and stored tobacco. The larva remains within the case at all times and dies if removed. It can turn completely around without leaving the case and can feed from either end. Adults do not feed.
Cases are white or the a slight color of the fabric infested.
If cases are absent,damage is recognized by as surface feeding in irregular furrows, or if serve re, complete holes.