Carpet beetle larvae are hidden household pests that damage rugs, clothing, and natural fibres while often going unnoticed. Many homeowners mistake their effects for other pest problems, including bed bugs. This guide explains what carpet beetle larvae are, where they come from, what they eat, the signs to watch for, and how to remove them.
What Are Carpet Beetle Larvae?
Carpet beetle larvae are the destructive stage of the carpet beetle lifecycle. Adult carpet beetles do not damage fabric — they feed on pollen outdoors. It’s the larvae that cause the fabric damage you find in your home. Larvae are small (1–5mm), carrot-shaped, and covered in stiff bristle-like hairs. They are brown to tan in colour and move slowly when disturbed.
What Do Carpet Beetle Larvae Eat?
Carpet beetle larvae feed exclusively on keratin — the protein found in animal-derived materials. In your home this means wool carpets and rugs, cashmere, angora, and wool clothing, silk, feathers, leather, and stored furs. They also infest taxidermy, dry pet food, and bird nests in roof voids. Synthetic fabrics are not eaten, but blended fabrics (e.g., wool-polyester mixes) will be damaged in the wool portions.
Signs of Carpet Beetle Larvae in Your Home
The most common signs are irregular holes in wool clothing or carpets (unlike moth damage, which creates more uniform thinning), shed larval skins (translucent bristly casings) near damaged areas, and live larvae found in dark undisturbed areas like the back of wardrobes, under furniture, and in carpet edges along baseboards.
How to Get Rid of Carpet Beetle Larvae
Thorough vacuuming of carpets, upholstery, and wardrobe interiors removes larvae and shed skins. Wash or dry-clean all affected clothing. Items that can’t be washed can be sealed in plastic bags and frozen for 72 hours to kill larvae and eggs. For persistent infestations, professional treatment with residual insecticide applied to carpet edges, baseboards, and wardrobe interiors is more effective than repeated DIY cleaning alone.
Read our complete guide on carpet beetles, learn about carpet beetle infestations, or explore carpet beetle treatment options. Contact Top Line Pest Control for professional treatment across BC.