Quick Answer
Irregular holes in wool, cashmere, fur, feathers, or similar stored material may be consistent with clothes-moth feeding. Holes alone are weak evidence; larvae, silk, portable cases, frass, or repeated damage in an undisturbed storage area make the explanation more credible.
Evidence strength
Weak alone; moderate with larval signs
Damage becomes more informative when it is tied to vulnerable material and direct moth-larval evidence.
- Material type and storage history matter.
- Larvae cause the feeding damage, not the adult moth.
- Silk, cases, frass, or a specimen provide stronger support.
What it may indicate
- Larval feeding on animal-based fibers in a quiet storage area.
- A nearby source in folded garments, rug edges, upholstery, feathers, fur, or accumulated lint.
Other explanations
- Carpet beetle feeding, especially when bristly larvae or cast skins are present.
- Wear, snagging, pets, washing, chemicals, or damage that existed before storage.
What this evidence cannot prove
- That fabric holes were caused by clothes moths.
- That moth activity is current rather than old.
- The species, source location, or extent of damage.
Where to check next
- Photograph the damage closely and the entire item, noting fiber content and storage history.
- Inspect folds, seams, rug edges, drawers, and nearby materials for larvae, silk, cases, frass, or cast material.
Additional evidence to collect
- An intact larva or adult, silk tubes or cases attached to the material, and repeated fresh damage.
- Similar signs across nearby animal-fiber items but not unaffected synthetic materials.
Pests associated with similar signs
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Reviewed guidance
Last reviewed August 2026. This content supports evidence interpretation and does not replace medical diagnosis, structural inspection, product labels, or local rules.