What Are Carpet Beetles?
Carpet beetles are a common household pest that often go unnoticed until the damage is done. As adults, they appear as small, oval-shaped beetles, typically about 1/8 to 1/4 inch (3-6 mm) in length. They have a speckled appearance, often featuring a mix of black, white, brown, yellow, or orange scales on their backs. Though adults may seem harmless, it’s their larvae you should be worried about. These tiny, fuzzy, caterpillar-like pests, often called "woolly bears," have a voracious appetite for natural fibers like wool, silk, leather, and even your favorite clothes and carpets.
How Do Carpet Beetles Get Inside?
Carpet beetles can enter your home in several ways, often sneaking in unnoticed. Here are a few ways they might find their way indoors:
- Through windows and doors: Adult beetles are attracted to light and can fly in through open windows or gaps in doorways.
- On plants and flowers: You might unknowingly bring them inside with fresh-cut flowers or outdoor plants.
- On second-hand items: Furniture, rugs, or clothing from thrift stores or garage sales could be harboring carpet beetle larvae.
Once inside, these stealthy invaders settle in, quietly laying eggs in dark, undisturbed areas like closets, attics, and storage boxes. It’s not long before their larvae hatch and begin feasting on your home’s soft furnishings.
Where Do Carpet Beetles Hide?
Carpet beetles thrive in places you don’t often check — making them difficult to spot before the damage is already done. Here are some of their favorite hiding places:
- Carpets and rugs: Especially woolen or blended ones, where larvae can burrow and feed.
- Closets: Natural fiber clothing, especially wool or silk, is a favorite target.
- Upholstered furniture: Sofas, chairs, and cushions can be a breeding ground for carpet beetles.
- Stored items: Boxes containing linens, blankets, or even old taxidermy can attract carpet beetles if left undisturbed.
What Damage Do Carpet Beetles Cause?
Carpet beetles aren’t dangerous to humans, but their larvae are infamous for causing costly damage to household items. These larvae feed on natural fibers, so the damage may first show up as small holes in carpets, clothes, or upholstery. Over time, if left untreated, they can destroy valuable items like rugs, garments, and even sentimental heirlooms.
Aside from material damage, they also leave behind shed skins and frass (insect waste), which can lead to allergic reactions for some people.