Kamitetep, also known as plaster bagworms or household casebearers (Phereoeca uterella), are small but damaging insects that commonly infest warm, humid areas like closets, basements, and garages. These pests belong to the same family as clothes moths and are especially destructive in their larval stage, during which they carry a gray, flat case made of silk, dust, and fibers for protection and later pupation.

Their diet includes a range of organic materials such as dust, hair, spiderwebs, wool, silk, feathers, paper, and dead insects. They generally avoid cotton and synthetic fibers but can seriously damage wool clothing, silk items, carpets, and even important documents. Kamitetep prefer dark, undisturbed areas, making them hard to notice until the damage is done.

To prevent and control an infestation, it’s important to vacuum regularly, especially in corners and under furniture, and remove any larval cases you find. Sealing cracks and crevices, reducing indoor humidity with a dehumidifier, and decluttering storage areas can also help. Vulnerable items like wool or silk should be stored in sealed containers and cleaned regularly to remove residue that attracts larvae. Removing spiderwebs and dead insects is also key.

If the problem persists, targeted insecticidal sprays may be needed, and for larger infestations, professional pest control is recommended. While kamitetep don’t bite or spread disease, they are a nuisance and can ruin valuable belongings. Their presence may also point to a spider problem that should be addressed.