Look for animal-based decorative objects on shelves or hanging on walls- items such as animal trophies, oriental rugs, or anything made of horn, hide, feathers, or bone.
Check for flowering shrubs around the home’s foundation. Adult carpet beetles feed outside on pollen and nectar and can enter homes from nearby flowering plants.
Ask if there have been problems lately with mice, rats, birds, bats, squirrels or other animals inside the house or in attics, garages, chimneys, basements. Check these areas, if accessible, for evidence of carpet or hid beetles on animal carcasses or in animal nests.
Check attics for wasp or bee nests or accumulations of overwintering dead insects such as cluster flies, stink bugs, or wasps.
Finally, check other obscure but possible infestation sites: piano felts or felt backing, insect collections, dried flower arrangements, natural bristle hair or clothes brushes, bee or yellowjacket nests inside wall voids, the glue in book bindings, and horse-hair insulation behind old plaster. Dermestids (carpet hid beetles) can also be found infesting stored food products, seeds (including seed pictures), dry pet food, and rodent bait.