Glossary/Moth DamageSpatial

Moth Damage

Deterioration caused by the larvae of clothes moths feeding on wool fibres, one of the most common forms of damage in stored or infrequently used rugs.

Clothes moths (Tineola bisselliella and related species) lay eggs in dark, undisturbed wool. The larvae eat the protein keratin in wool fibres, leaving behind bare warp threads where pile has been consumed. Moth damage is typically characterised by irregular bare patches, often in areas of shadow or under furniture where the rug has been least disturbed.

Prevention: keep rugs in use and vacuumed regularly, moth larvae avoid light, movement, and vibration. For stored rugs, use natural repellents (cedar, lavender) and check periodically. Do not seal rugs in plastic bags, which trap moisture and can paradoxically create conditions moths prefer.

If active infestation is suspected: isolate the piece immediately to prevent spread. Freeze the rug at −18°C for two weeks (domestic deep freeze works) to kill larvae and eggs. Then take to a specialist for assessment.

Moth damage to vintage kilims is typically repairable if caught early, re-weaving of weft threads in affected areas is possible by a skilled restorer. Extensive moth damage to a pile rug requires more significant restoration.

Moth damage is a real and common risk for wool rugs in storage or in infrequently lit areas. Prevention is straightforward; remediation is costly. Understanding the signs and risk conditions protects your piece.
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