Preserving & Repairing Your Best Clothes

Larvae do the damage, not the moths you see flying — adults have no mouthparts and can't eat; a flying moth is just laying eggs. Larvae digest keratin: the protein in wool, cashmere, fur, feathers. They'll eat cotton or synthetic only if wool-blended or heavily soiled. Silk is a gray area — strictly a different protein (fibroin, not keratin), but several extension sources list it as vulnerable anyway, especially soiled or blended. Safest bet: protect silk the same as wool.

Moths are drawn to soiling — sweat, food residue, body oil — not the fiber itself. Cleaning a garment before storage is the single most effective thing you can do to keep moths away, more effective than any repellent.

Three methods reliably kill eggs and larvae: a hot wash at 120°F+ for 20–30 minutes, professional dry cleaning, or freezing below 0°F (−18°C) for 72+ hours, sealed airtight to prevent condensation — extend to 1–2 weeks for thick items. Be skeptical of the common claim that warming a frozen garment back up adds "thermal shock" damage; that isn't well supported. The reliable protocol is simply fast-freeze plus a sustained hold.

Cedar and lavender offer partial, temporary protection at best — cedar's oils lose potency within a few years and need refreshing; neither is a primary defense. Mothballs kill only in a sealed, airtight space, are toxic to handle, and can damage plastics — real risk, limited benefit. What actually works: clean before storing, airtight containers, regular vacuuming of storage areas, and pheromone traps to catch adults before they lay eggs.

Smithsonian's Museum Conservation Institute targets roughly 70°F (±4) and 45% relative humidity (±8) — cool, dark, dry, stable; fluctuation damages more than an imperfect setpoint. Avoid attics, basements, garages.

Use acid-free, lignin-free tissue and boxes: buffered tissue for cotton/linen, unbuffered (neutral) for silk/wool, which buffering can harm. Skip plastic and PVC — they trap moisture and yellow — and never let fabric touch bare wood.

Roll flat textiles when you can; folding creates permanent creases. If folding, pad and refold every 1–2 years. Hang only light, structured garments on padded hangers — heavy, beaded, or knit pieces get boxed flat; knitwear always folds, never hangs.

Clean a gown before boxing, not after — invisible sugar, champagne, sweat, and oil residue oxidizes into yellow or brown stains over time. Wet-cleaning often works better on sugar-based stains. Use an acid-free, lignin-free box with correct tissue buffering.

There's a real conflict: conservators recommend an unsealed, breathable box — sealing traps moisture, invites mold, and blocks needed inspection. Commercial companies often sell sealed "100-year guarantee" boxes that contradict this. Follow conservation guidance: unsealed, inspected and refolded every 1–2 years. For a genuinely high-value piece, a textile conservator (via the American Institute for Conservation) beats a mall preservation upsell.

French, or invisible, reweaving is the gold standard for moth holes and small tears in woven wool: a reweaver harvests thread from a hidden seam and rebuilds the hole warp and weft, effectively undetectable. It's a dying trade — skilled reweavers are aging out, and many cleaners now mail the work out. Estimates run from ~$100 for a small hole into the hundreds for larger damage; a piece-weave patch handles bigger areas but isn't fully invisible.

Knitwear needs a different fix — re-knitting, Swiss darning, grafting — since knit doesn't behave like woven cloth and calls for a specialist. Repair is worth it whenever cost is meaningfully below the garment's real value, almost always true for bespoke, designer, or heirloom pieces.

Remove pills with an electric fabric shaver, a cashmere comb, or a sweater stone: lay flat, work in one direction, light pressure, small sections. Never scissors or a razor — too easy to cut the fabric. Pilling typically decreases after the first several washes, so a pilled new sweater isn't necessarily poor quality.

Rest garments 24–48 hours between wears — wool fiber needs time to recover its crimp, the same way shoes need to dry out; rotated shoes can last 3–5x longer than ones worn daily.