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Carpet Moths

Small, pale moths whose caterpillars eat wool, silk, fur and feathers. They chew holes in carpets, rugs, clothes and blankets, usually in dark, undisturbed places such as under furniture and inside wardrobes.

Written by PestMan Editorial TeamTechnical review pendingPublished Updated
Also called
Clothes moths
Damage done by
Larvae, not adult moths
Eats
Wool, silk, fur, feathers
Health risk
None — damage only
Risk level
Low

Carpet moth identification

How to recognise carpet moths

  • Adults: small (about 6–8 mm long), narrow, golden-buff to brownish moths that hold their wings folded flat along the body.
  • They fly weakly and tend to scuttle or flutter into dark places rather than fly to lights, unlike pantry moths.
  • Larvae: creamy-white caterpillars up to about 10 mm with a darker head, found in or under damaged fabric.
  • Webbing clothes moth larvae leave silk tunnels and patches of webbing; case-bearing clothes moth larvae carry a small silk case made from the fibres they eat.

Common species in Australia

Webbing Clothes Moth

Tineola bisselliella

The most common clothes and carpet moth in homes worldwide, including Australia. Its larvae eat wool, silk and fur under patches of silk webbing.

Case-bearing Clothes Moth

Tinea pellionella

A clothes moth whose larvae live inside a portable silk case made from the fibres they eat, so the case is often the same colour as the damaged fabric.

Carpet moth overview

“Carpet moths” and “clothes moths” are the same household pests: small moths in the family Tineidae whose larvae feed on natural animal fibres. In Australian homes the two most common are the webbing clothes moth and the case-bearing clothes moth.

The adult moths do no damage. They don’t feed on fabric at all. The caterpillars (larvae) do, because they can digest keratin, the protein in wool, silk, fur, feathers and hair. They prefer fabric that is dark, undisturbed and slightly soiled, which is why damage turns up under beds and couches, along skirting boards and in stored clothes rather than in the middle of a busy room.

Carpet beetles cause very similar damage and are often mistaken for moths. See carpet moth or carpet beetle. Small moths in the kitchen are usually pantry moths instead, which eat dry food, not fabric. See why there are moths in my pantry.

Behaviour

  • Adults avoid light and are usually seen when disturbed from a wardrobe, rug or corner.
  • Only males fly much; females tend to stay near the fabric where they lay eggs.
  • Larvae feed out of sight, so damage is often found long after the infestation started.
  • Activity continues all year indoors, and moths are often more noticeable in warmer months.

Habitat

  • Wool and wool-blend carpets and rugs, especially under furniture and along edges.
  • Wardrobes, drawers, blanket boxes and stored clothes, particularly items that haven’t been worn or cleaned for a while.
  • Felt, fur, feathers and down: piano felts, hats, cushions, taxidermy and old toys.
  • Accumulated lint, pet hair and fluff in corners, vents and under floorboards.
  • Bird nests and dead animals in roof voids and wall cavities, which can sustain a population nearby.

Lifecycle

  • Egg → larva → pupa → adult. Females lay dozens of eggs directly on or near suitable fabric.
  • The larval stage can last from about a month in warm conditions to many months in cool ones.
  • Adults live for a few weeks, don’t feed, and exist only to mate and lay eggs.

Food sources

  • Natural animal fibres containing keratin: wool, silk, cashmere, mohair, fur, felt, feathers and hair.
  • Synthetic fibres and cotton are rarely eaten on their own, but blends with wool, and fabric soiled with sweat or food, are at risk.

Entry points

  • Second-hand or vintage clothes, rugs, furniture and fabrics.
  • Adults flying in through open windows and doors in warm weather.
  • Moving out from bird nests or dead animals in the roof or walls.

Infestation signs

  • Irregular holes in jumpers, scarves, suits and blankets.
  • Bare or grazed patches in wool carpet and rugs, often under furniture or along the skirting.
  • Silk webbing, tunnels or small cases on fabric, and fine, sand-like droppings (frass) the same colour as the fibre.
  • Small pale moths fluttering out of wardrobes or from under furniture when disturbed.

Health implications

  • Carpet and clothes moths don’t bite, sting or spread disease. The harm is damage to clothing, carpets and heirlooms.
  • Mothballs and moth products can be poisonous, especially to children and pets. If anyone swallows one, call the Poisons Information Centre on 13 11 26; in an emergency call 000.

Prevention

  • Vacuum thoroughly and often, including under furniture, along skirting boards and inside wardrobes, then empty the vacuum outside.
  • Clean clothes before storing them: wash or dry-clean as the care label allows. Moths favour soiled fabric.
  • Store woollens, silks and furs in sealed containers or zipped garment bags.
  • Wear, air and move stored items regularly; disturbance discourages egg-laying.
  • Check second-hand clothes, rugs and furniture before bringing them inside.
  • Use pheromone traps to monitor for webbing clothes moths, and act early if they start catching moths.

Treatment overview

  • Find and deal with the source first: the rug, wardrobe or stored item where larvae are feeding.
  • Kill eggs and larvae in affected items by washing hot or dry-cleaning as the care label allows, or by sealing items in a bag and freezing them for at least a week.
  • Vacuum the whole area thoroughly and repeat over several weeks, because new larvae hatch from eggs missed the first time.
  • Insecticides registered for carpet and clothes moths are available; use them only as the label directs. Professional treatment is worth considering for widespread carpet damage or valuable items.
Product safety

If you use any pest product, read the label first and follow it exactly — it is a legal requirement in Australia. Keep products away from children, pets and food areas as the label directs.

Questions about carpet moths

Guide

How to Pest-Proof Your Home

A practical, room-by-room approach to reducing pests without relying on chemicals: remove what attracts them, close the ways in, and make your property less comfortable for them.

Guide

Pest Prevention Checklist

A printable seasonal checklist of simple, low-cost tasks that reduce pests around Australian homes, with the reason behind each step and extra lists for renters, apartment residents, pet owners and Queenslander owners.

Pantry Pests

Small moths, weevils and beetles that infest flour, rice, cereals, nuts, dried fruit, spices and pet food. They usually arrive already inside a product and spread to other packets in the pantry.

Silverfish

Primitive, wingless insects with silvery scales that live in humid, undisturbed places and feed on starch, paper and glue. They damage books and fabrics but are harmless to health.

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Sources & further reading

PestMan provides general information only and does not replace licensed pest-management, medical, veterinary or structural advice. Always read and follow product labels. Read our disclaimer.