Likely carpet beetle larva

Carpet edges, upholstery, closets, and other undisturbed indoor areas containing natural fibers.

Larvae consume wool, fur, feathers, silk, hair, lint, and dead insects; adults generally feed on pollen and nectar.

Larvae are slow-moving and hide in dark, sheltered places, often leaving shed skins and pellet-like frass. They develop through several molts before pupating; adults may appear near windows.

They do not bite or transmit disease, but larvae can damage textiles and trigger irritation from shed hairs. They help decompose animal-derived materials outdoors.