Casemaking Cloths Moths Prevention and Control
Casemaking cloths moths are tiny dart shaped whitish/gray moths about a half inch in length as adults. Adults do not feed. However, as a larvae, they spin a protective cylinder shaped case made of silk as well as the fibers it's been eating. If it has been eating a red wool rug, the case will have the same color and texture as the wool rug, making them camouflaged and hard to detect. The cylinders, depending on larvae stage typically attach to the fabric at one end also making them hard to detect as they will attach to the bottom side of furniture, even the bottom of wood furniture.
Wool, silk, cotton and linen are all food for the casemaking moth and this is noticeable by bald lines in carpet as well as large bald spot where it looks like the carpet has been weed-whacked in an irregular line.