PestDecoderDecode a clue

Inspection route

Closet and textile storage pest clues

Dark, undisturbed natural fibers and lint favor textile pests while cardboard and humidity support booklice and silverfish.

Inspect in this order

Start where evidence is most likely to remain undisturbed. Photograph scale and placement before cleaning, then establish a clean baseline only when the material can be handled safely.

  1. Inspect garment folds, rug edges and shelf corners.
  2. Check lint, pet hair, feathers and stored wool separately.
  3. Look for hairy skins versus silk cases.
  4. Bag affected items before moving them.
Avoid this shortcut

Do not carry loose infested textiles through other rooms.

Common candidates in this location

Location helps prioritize candidates, but it does not identify a pest by itself. Use a physical sign and companion clue before making a treatment decision.

low concern

Varied carpet beetle

Anthrenus verbasci

Hairy banded larval skins and irregular grazing damage in lint, wool, feathers or stored natural fibers.

Shed skinsLarvae and grubsDamage and gnawing
Read evidence profile
low concern

Clothes moth

Tineola bisselliella and Tinea pellionella

Smooth pale larvae, attached silk cases or webbing and clipped natural fibers in dark garment folds.

Webbing and silkLarvae and grubsDamage and gnawing
Read evidence profile
low concern

Silverfish

Lepisma saccharinum

Silvery tapered body, three tail filaments and irregular surface grazing in cool humid paper or storage areas.

Shed skinsDamage and gnawing
Read evidence profile
low concern

Firebrat

Thermobia domestica

Mottled tapered insect with three tail filaments recurring near a hot, humid appliance or boiler zone.

Shed skinsDamage and gnawing
Read evidence profile
low concern

Booklouse

Psocoptera

Minute pale or gray crawlers on humid books, cardboard or moldy surfaces, without jumping.

Larvae and grubsDamage and gnawing
Read evidence profile
high concern

House mouse

Mus musculus

Small smooth tapered droppings along edges, fine gnawing and shredded nesting material near food routes.

DroppingsHoles and openingsSounds and movement
Read evidence profile

Evidence types worth checking

Shed skins

Cast skins preserve body shape and are often more diagnostic than a fleeting live sighting.

6 candidate profiles

Inspect this clue

Larvae and grubs

Hair, head capsule, legs, body curvature and food source distinguish pantry, textile, fly and wood-boring larvae.

10 candidate profiles

Inspect this clue

Damage and gnawing

Surface scraping, paired tooth marks, hollow wood, clipped fibers and food-package holes are high-value contextual clues.

12 candidate profiles

Inspect this clue

Webbing and silk

Silk that binds food, attaches to fibers or forms a geometric web points to very different candidates.

3 candidate profiles

Inspect this clue

Eggs and cases

Capsules, clusters and attached cases can separate cockroaches, moths, bed bugs and flies when scale and placement are documented.

8 candidate profiles

Inspect this clue

Droppings

Shape, ends, texture and placement can narrow rodents, cockroaches and bats without touching the material.

7 candidate profiles

Inspect this clue

Build a repeatable baseline

Record the date, exact position and a scale reference. If cleanup is safe, note whether the sign returns in the same route, below the same opening or near the same resource. Repeat location can be more informative than color or a single photograph.

Source basis