Adult carpet beetles are normally found outdoors feeding on flowers and plants, but they can sometimes fly into your home from an open window or be brought in accidentally on cut flowers or groceries. Once inside, they lay eggs in fibrous materials, which are a source of food for the fuzzy little carpet beetle larvae that hatch.
Signs of Carpet Beetles
Damage to Fibrous Materials
When carpet beetles infest your home, there are several types of items and materials their larvae might feed on. They're best known for being a danger to carpeting, but actually carpet beetle larvae will eat their way through any fibrous materials that contain keratin, such as wool, fur, felt, silk, feathers, and leather.
Hairs falling out of furs or trophy heads
When carpet beetle larvae feed on furs, animal mounts, or bristle brushes, they clip the hairs off at the base, leaving a bald spot but not damaging the hide beneath.
Signs of an infestation
Though carpet beetles cause the most damage during the larval stage, the first and most apparent sign of infestation is adult beetles on windowsills. Similar to moths, larvae can be detected by irregular holes found in carpets, fabric, and the like. However, carpet beetles tend to eat a single, large area of a fabric whereas moths create tiny holes all over garments. Additionally, carpet beetle larvae leave cast skins while molting, which may cause allergic reactions and dermatitis in some highly sensitive individuals.
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