Carpet beetles are often found inside homes and businesses in—you guessed it—carpet. They’re attracted to fibers and also like to dwell on (and in) furniture, blankets, and clothing. Damage from carpet beetles typically occurs when they are larvae, since they’re growing and eat fibers. They can usually be found in undisturbed, quiet, dark locations, so a closet is perfect. You may even find them inside woodwind instruments that have been left alone in storage. Carpet beetles are sometimes called “museum pests” due to the fact that there are large amounts of undisturbed areas and fabrics lying still.
While carpet beetles don’t bite humans, they have been known to cause rashes. The adult carpet beetle is capable of flying, which means you may find them essentially anywhere in and around your home. That also means they can lay their eggs in those areas as well.