Pulled Out Last Winter's Sweaters and Found Them Full of Moth Holes - 4 Hard Lessons About Clothes Moth Prevention
Major fail.
Last week I organized my closet and pulled out the wool sweaters I stored away last winter. Found three holes in the sleeve. Not wear-and-tear holes, but neat little round holes—moth damage.
A 300-yuan sweater, ruined just like that.
Then I checked my entire closet. Bad news: another cashmere scarf was also hit. Good news: other cotton clothes were fine—because clothes moths mainly eat animal fibers (wool, cashmere, silk, fur), not cotton and synthetics.
Alright. This seasonal change I decided to get serious about it. Read a bunch of materials and summarized the lessons to share with you.
Lesson 1: Must wash before storing.
This is the most critical step, and also where I used to be most lazy.
Clothes moths don’t appear from nowhere. They’re attracted to sweat stains, body oils, and food residue on clothes. Stuffing a worn but “looks clean” sweater directly into the closet is like laying out a buffet for bugs.
All winter clothes being stored, especially wool and cashmere, must be washed and thoroughly dried first. Dry cleaning is even safer—the dry cleaning solution itself kills moth eggs.
Lesson 2: Mothballs aren’t as effective as you think.
Traditional mothballs have two problems: first, the smell is overwhelming, requiring days of airing out before wearing; second, many “mothballs” on the market are actually paradichlorobenzene, which is harmful with long-term exposure.
I tested three alternatives:
Cedar balls/cedar blocks—natural insect repellent with a light wood scent. I bought a bag of 20 for 15 yuan, placing two or three in each drawer. Only downside: after six months you need to sand the surface to release the scent again.
Lavender sachets—also have some repellent effect, though not as strong as cedar. Advantage: smells nice, clothes come out with a pleasant fragrance.
Moth-proof garment bags—sealed bags with oxygen absorbers for expensive cashmere items. I use vacuum compression bags from Taobao at 8 yuan each, paired with a vacuum cleaner to extract air. Best results but most troublesome to use.
Lesson 3: A full closet isn’t better.
Clothes packed too tightly prevent air circulation, making them prone to dampness and mold while creating a warm, safe environment for bugs. After seasonal organizing, leave at least 20% empty space in your closet.
Also, place moisture absorbers at the bottom of the closet. Dampness is what both bugs and mold love. These cost a few yuan at supermarkets, replace every three to four months.
Lesson 4: Expensive clothes deserve special treatment.
My current approach—regular cotton winter clothes can be stored normally, but wool/cashmere/silk items get individually covered with dust bags and hung, or sealed in vacuum compression bags. Place a cedar ball between each item.
Troublesome? A bit. But think about it—a cashmere sweater costs 300-500 yuan, is 5 minutes of protection worth it?
Finally, a cool fact: clothes moth larvae are the real “culprits” eating clothes. The adults (those small moths you occasionally see) don’t eat clothes but lay eggs. Seeing small moths in your closet means there are already eggs—take all the clothes out and check immediately.
Just do this one thing today: take a look at the sweaters and cashmere in your closet. It’s not too late.