Carpet Beetle Larva (sometimes described as 'Woolly Bear')

Natural Habitat

Indoors, especially in undisturbed areas rich in natural fibers (wool, silk, fur, feathers), dust, and dried animal products. Can also be found outdoors in nests of birds and insects.

Diet & Feeding

Keratin and chitin found in natural fibers (wool, silk, leather, fur, feathers), pet dander, dead insects, museum specimens, dried food products. Does not feed on synthetic fibers.

Behavior Patterns

Larvae are generally slow-moving, covered in bristles (setae), and are often found in dark, undisturbed areas. They molt multiple times as they grow, shedding their skin, which can sometimes be mistaken for the pests themselves. Adults are small, oval-shaped beetles that feed on pollen and nectar and are often found near windows as they try to get outside after emerging indoors.

Risks & Benefits

Potential risks include damage to textiles, carpets, clothing, museum collections, and stored foods. Some people may experience allergic reactions (dermatitis) to their bristles or shed skins. They are not known to bite humans. Generally considered a pest in homes and institutions. No significant benefits in a household setting, though outdoors they can act as scavengers.

Identified on: 11/28/2025