Carpet Beetles in Arizona: How to Find Them and Get Rid of Them
Short answer: the tiny beetles on your windowsill aren't the problem. Their hairy larvae are, and they are hiding wherever lint, hair, wool or pet food collects.
Carpet Beetles in Arizona Homes: What You're Seeing
University of Arizona Cooperative Extension lists three carpet beetles as pests in Arizona: the varied carpet beetle, the furniture carpet beetle and the black carpet beetle. Adults are tiny and feed on pollen and nectar, so they fly in from outside and turn up on windowsills and cut flowers. Females lay eggs indoors or in old bird, bee and wasp nests and spider webs. The larvae eat wool, carpet, rugs, fur, feathers, silk, leather, pet hair and stored foods, and they are some of the hardest indoor pests to get rid of because they feed in hidden places.
How to Identify Carpet Beetles and Their Larvae
- Varied carpet beetle: about 1/10 inch, round, black with a patchy pattern of white, brown and yellow scales.
- Furniture carpet beetle: about 1/10 inch, mottled with black spots and white and yellow-orange scales.
- Black carpet beetle: 1/8 to 3/16 inch, shiny black to dark brown with brownish legs.
- Larvae: small and visibly hairy, often striped light and dark brown or shiny and tapered with a tail tuft. This is the stage that does the damage.
- Cast skins: brown, bristly, shell-like skins the larvae shed.
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Signs of a Carpet Beetle Infestation
- Shed larval skins along baseboards, under furniture or in closets.
- A large damaged patch in one area of a wool rug, sweater or blanket, with no webbing (University of Arizona Cooperative Extension).
- Hairy larvae in drawers, stored clothing, pet beds or the pantry.
- Adults on window ledges again and again, especially in spring.
How to Get Rid of Carpet Beetles: 6 Steps
These steps follow University of Arizona Cooperative Extension guidance:
- Find the food source. Check closets, under rugs and furniture, pet beds, stored wool, and pantry goods like pet food and spices.
- Remove debris: lint, hair, dead insects, old spider webs, and any bird, bee or wasp nest on the house. Throw out badly infested items.
- Vacuum thoroughly and often: rugs, drapes, upholstery, closets and floor edges. Empty the vacuum outside right away.
- Freeze or heat what you keep: two weeks in the freezer, or above 120°F for 30 minutes. Wash or dry-clean what you can.
- Spot-treat floor edges, under furniture, closets and cracks with a product labeled for carpet beetles. Never spray clothing or bedding.
- Store clean wool and keepsakes in airtight containers.
Carpet Beetle Treatment in Phoenix: What the Service Does and Costs
If cleaning hasn't stopped them, a visit confirms which beetle you have, finds the hidden food source, and spot-treats baseboards, closets, under furniture and cracks with products labeled for carpet beetles. A one-time diagnostic visit with treatment is $149. The plan is $50/month with treatment every 60 days and free callbacks. Start a plan the same day and your visit fee covers your first 3 months of the plan. See pest control cost and household invader control.
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Carpet Beetle Questions from Arizona Homeowners
How do I get rid of carpet beetles in Arizona?
Find and remove what the larvae are eating, then clean hard. University of Arizona Cooperative Extension lists: remove lint, hair, dead insects and old nests; vacuum rugs, closets and upholstery often and empty the vacuum right away; freeze infested items for two weeks or heat them above 120°F for 30 minutes; and spot-treat floor edges, closets and cracks with a product labeled for carpet beetles, never on clothing or bedding.
Should I be worried if I find a carpet beetle in my house?
One adult on a windowsill is common, because adults feed on pollen and nectar and fly in from outside. Worry when you find hairy larvae, shed brown skins, or damaged wool, rugs or stored clothes. That means they are breeding inside.
What do carpet beetles look like?
Adults are tiny, rounded beetles, about 1/10 inch for the varied and furniture carpet beetles and 1/8 to 3/16 inch for the black carpet beetle. The larvae are visibly hairy, and the larvae do the damage (University of Arizona Cooperative Extension).
Carpet beetle damage or clothes moth damage?
University of Arizona Cooperative Extension says carpet beetles usually damage a large area in one part of a garment or rug, with no webbing. Clothes moths usually leave scattered holes.