Why moths damage jumpers and what you’re up against
Moths aren’t out to ruin your wardrobe on purpose, but certain species are drawn to natural fibres. In Ireland, two clothes moths are the main culprits: the common clothes moth and the case-bearing clothes moth. The larvae of these moths crave keratin, a protein found in wool, silk and other animal-derived fabrics. That’s why a favourite jumper can suddenly sprout holes, while synthetic fabrics are less appealing. In nature, moths play a key role as recyclers, but in our homes they become a wardrobe nuisance when conditions are right—think warmth, moisture and a cosy, undisturbed cache of knits.
Historically, a decline in moths came with the rise of synthetic fabrics and chemical controls. Today, with milder winters and well-insulated homes, multiple generations can occur each year, increasing the chance of damage as you unpack autumn jumpers.
What to do now: practical, DIY remedies
If you find holes or thinning in jumpers, you have options that don’t involve drastic wardrobe replacements. Here are practical steps you can take before you reach for a needle or a professional repair:
- Clean before storing: wash and thoroughly dry knits before putting them away for the season. Dirty fabrics attract moths and can hide eggs or larvae.
- Use natural repellents: cedar blocks, cedar oil sachets or lavender can deter moths in storage, especially in drawers and wardrobes.
- Cold treatment: freezing infested items for several days can kill larvae. However, ensure items are well-sealed to avoid moisture damage.
- Low-heat option for fragile knits: textile designer Kim O’Driscoll suggests a cautious approach—placing 100% wool or cashmere jumpers in a conventional oven at the lowest setting for about 30 minutes. Important: never apply to items with plastic or polyester, as they may melt. Always test a small area first and use an oven thermometer.
- Storage in breathable covers: cotton tote bags or cotton garment bags help air circulate and keep moths out better than vacuum-sealing, which can compress shapes and still allow entry for moths.
Repairing holes: from quick fixes to careful restoration
When moth holes appear, you don’t have to consign the garment to the bin. Hand repair with a darning needle is a traditional, effective method that preserves memories as well as materials. In Ireland, textile designer Kim O’Driscoll of Project Prolong is a notable advocate for visible mending and circular fashion. She repairs jumpers by hand, often weaving in near-invisible stitches that restore function while honoring the piece’s story. Repairs start around €10 and can involve dozens of stitches for fine cashmere and more for chunky knits.
Repair specialists emphasize wool’s durability: with care, there isn’t a wool garment that can’t be fixed. The goal is to extend life, not merely patch over damage. For sentimental items—like a cardigan handed down from a relative or a cashmere hoodie with a medical memory—repair can be a meaningful act of preservation.
From repair to revival: embracing a slower wardrobe
Repair and upcycling workshops, like those offered by O’Driscoll in Dublin, equip people to mend and transform their clothes. These efforts align with a broader movement toward sustainable fashion, turning wear and tear into opportunities for creativity rather than disposal. When you value repair, you reduce waste and extend the life of cherished textiles.
Smart storage and prevention for the future
Prevention beats cure. Regular cleaning, careful storage, and mindful shopping help safeguard your knit collection. Consider:
- Seasonal rotation: wash and store jumpers after each season to deter moths and assess wear early.
- Choose natural fibers when possible: natural fibres such as wool and cashmere are more prone to moth activity but repair-friendly when treated with care.
- Airtight, but breathable: use containers that seal well yet allow fabric to breathe, and add natural deterrents in the storage area.
Real-world stories: care and creativity in action
In Ireland and beyond, people are reimagining how we value and care for textiles. Projects like Project Prolong demonstrate how repairing can be artful and practical. Clients from near and far bring damaged jumpers for invisible repairs, proving that a hole need not spell the end of a garment’s life. The philosophy is simple: care for what you love, and the garment will carry its memories longer.
Takeaway: protect, repair, and celebrate your knits
Your jumper deserves a second life. With thoughtful cleaning, natural deterrents, and skilled mending, moth damage becomes a chance to slow fashion, celebrate craftsmanship and keep your wardrobe sustainable for years to come.
