The bugs eating your clothes are almost certainly moth larvae or carpet beetles, and they’re after one thing: keratin, a protein found in animal-based fibers like wool, silk, fur, feathers, and leather. The good news is that a combination of proper cleaning, smart storage, and a few natural deterrents can stop them entirely. Pure cotton and synthetic fabrics are rarely attacked unless they’re blended with wool or heavily soiled with food stains and body oils.
Which Bugs Actually Eat Clothes
The webbing clothes moth is the most common fabric pest in the United States. A less common cousin, the casemaking clothes moth, causes similar damage but is far less widespread. In both cases, it’s the larvae doing the eating, not the adult moths you might spot flying around your closet. The adults don’t feed at all.
Carpet beetles are the other major culprit. Their larvae also digest keratin and will chew through wool, silk, fur, and leather. The damage patterns differ slightly: moth larvae leave behind silken webbing, tubes, or small cases on the fabric, while carpet beetle larvae leave behind tiny shed skins. Both leave irregularly shaped holes or surface grazing on the fabric itself.
To check whether you have an active problem, inspect the hidden portions of garments, especially under collars, along seams, and in folds. Look for silken tubes or mats with fabric particles and tiny specks of excrement woven in. The droppings often match the color of the fabric the larvae have been eating. On fur items, look for hairs clipped at the base, leaving loose fur and exposed hide.
Why Dirty Clothes Attract Pests
Moth larvae are drawn to garments that carry perspiration, body oils, and food residue. These organic traces give the larvae extra nutrients and make even non-target fabrics appealing. Cotton and polyester blends that would normally be ignored become fair game when they’re stained with sweat or food. This is why the single most effective prevention step is also the simplest: clean your clothes before storing them.
Clean Everything Before Storage
Washing or dry cleaning garments before they go into long-term storage kills any eggs or larvae already present and removes the perspiration odors that attract new pests. For machine-washable items, a hot wash followed by a full dryer cycle on high heat is ideal. The heat from the dryer is what does most of the killing. Run fewer items per load than the dryer’s rated capacity so everything gets thoroughly hot and bone dry.
For delicates that can’t handle high heat, standard dry cleaning is effective at killing all life stages of clothes moths. One exception: some “green” dry cleaners use gentler solvents that may not be as reliable for pest elimination. If you’re specifically trying to kill larvae on a delicate wool or silk garment, confirm the process with the cleaner.
Items that can’t be washed or dry cleaned, like structured handbags or vintage pieces, can be frozen instead. Wrap the item in a sealed plastic bag and place it in a household freezer for two weeks. After removing it, let it return to room temperature while still sealed inside the bag. This prevents condensation from forming on the fabric. Larvae become inactive below 40°F, and two weeks at standard freezer temperature kills eggs, larvae, and adults.
Store in Sealed Containers
Once garments are clean, the goal is to physically prevent moths from reaching them. Airtight storage is the most reliable method. Zippered garment bags designed for moth protection, vacuum-sealed bags, and plastic bins with tight-fitting lids all work. The key is creating a barrier that adult moths cannot penetrate to lay eggs.
Separate your animal-fiber garments (wool, silk, cashmere, fur) from the rest of your wardrobe. Moths don’t care about pure cotton or synthetics, so those items don’t need the same level of protection. Focus your sealed storage on the vulnerable pieces. This also makes the task more manageable since you’re not trying to bag every item you own.
Natural Repellents That Work (and Their Limits)
Cedar, lavender, rosemary, thyme, and cloves all repel moths to varying degrees, but none of them kill an established infestation. They’re deterrents, not pesticides. Think of them as a second line of defense behind cleaning and sealed storage.
Cedar is the strongest natural option. The oils in eastern red cedar can actually kill very small, newly hatched larvae on contact, and the scent deters adult moths from laying eggs nearby. The catch is that cedar’s oils evaporate. Cedar blocks, hangers, and chips need to be replaced or lightly sanded to refresh the surface every two to three months. Once the scent fades, the protection fades with it.
Lavender oil works as a repellent when dabbed onto a cotton ball and placed near clothing, but keep the oil off the fabric itself since it can stain. Dried lavender sachets in drawers provide a gentler, longer-lasting effect. Herb sachets combining lavender, rosemary, thyme, and cloves can remain effective for about six months before they need refreshing.
One important note: if you’re also using pheromone moth traps (sticky traps that lure adult males), keep cedar and lavender away from them. The strong scents interfere with the pheromones and reduce the traps’ effectiveness.
Skip the Mothballs
Traditional mothballs contain naphthalene or paradichlorobenzene. They work by releasing toxic fumes in an enclosed space, but those same fumes are hazardous to people and pets. Naphthalene is a known carcinogen, and both chemicals are poisonous if ingested. Old-style naphthalene mothballs have been outlawed in some regions for good reason. Pheromone-based sticky traps are a safer modern alternative for monitoring. They won’t eliminate an infestation on their own, but they’ll tell you whether adult moths are present so you can take action.
Control Humidity
Clothes moths thrive in warm, humid, undisturbed environments. Closets that stay dark and still for long stretches are ideal breeding grounds. A small dehumidifier placed in a closet or storage area makes the environment less hospitable. Regularly opening closet doors, rotating stored garments, and vacuuming shelves and corners also disrupts larvae that prefer to feed undisturbed.
If You Already Have an Infestation
When you find active damage, a thorough cleanout is the only reliable fix. Start by removing everything from the affected closet or dresser. Sort items into categories: machine-washable pieces go through a hot wash and high-heat dryer cycle, delicates go to the dry cleaner or get hand-washed, and items that can’t be cleaned get bagged and frozen for two weeks.
While the closet is empty, vacuum every surface thoroughly, paying special attention to cracks, corners, baseboards, and any crevices where larvae could hide. Wipe down all surfaces with a white vinegar and water solution. Caulk gaps along baseboards and around any access panels or pipe openings. When you’re done vacuuming, seal the vacuum bag in a garbage bag and dispose of it immediately so larvae can’t crawl back out.
Don’t forget adjacent items that share the space. Luggage, shoes, handbags, sewing supplies, and even holiday decorations stored in the same closet can harbor larvae. Vacuum these items, steam clean them if possible, or bag them for freezer treatment.
Once everything is clean and the closet is sealed up, return your treated garments and set up your deterrents: fresh cedar chips in mesh bags hung from hooks, lavender sachets in drawers, and pheromone traps to monitor for any remaining adults. Check the traps regularly. If you’re still catching moths after several weeks, you may need to repeat the cleaning process or investigate whether larvae are feeding on a source you missed, like a wool rug, upholstered furniture, or an old fur item stored elsewhere in the house.
Quick-Reference Prevention Checklist
- Clean before storing: wash, dry clean, or freeze all wool, silk, cashmere, and fur items before putting them away
- Use sealed storage: zippered garment bags, vacuum bags, or airtight bins for animal-fiber clothing
- Refresh natural repellents: replace cedar every 2 to 3 months, herb sachets every 6 months
- Reduce humidity: use a dehumidifier and keep closets ventilated
- Vacuum regularly: closet floors, shelves, corners, and baseboards
- Monitor with traps: pheromone sticky traps catch adult males and alert you to new activity
- Inspect periodically: check stored garments for holes, webbing, or silken cases, especially under collars and along seams