Cockroaches can and do damage clothes, though not in the way you might expect. Unlike clothes moths or carpet beetles, which feed on animal fibers as a primary food source, cockroaches chew through fabric mainly to get at food residues, sweat, body oils, and stains left on garments. They’re scavengers, not true fabric feeders, but the holes and damage they leave behind are real.
What Cockroaches Are Actually After
Cockroaches can’t digest keratin, the protein found in wool, silk, and animal-based fibers. But they’ll chew right through keratin-containing fabrics anyway, along with cotton, linen, and synthetics, if there’s something on the surface worth eating. Food spills, perspiration, skin oils, perfume residue, beverage stains, and even starch from laundry products all make clothing attractive to roaches.
This is an important distinction. A clothes moth larva will systematically eat through a wool sweater because wool is its food. A cockroach will gnaw irregular holes in that same sweater because you spilled soup on it last week. The fabric itself is collateral damage. That said, cockroaches are opportunistic enough to consume cellulose-based fibers like cotton and rayon when other food is scarce, since these materials contain digestible plant-based compounds.
How Cockroach Damage Looks Different
Clothes moth damage tends to show up as clean, evenly grazed patches on wool, cashmere, or silk, often in hidden folds. Carpet beetle larvae leave similar surface grazing, sometimes along seams. Cockroach damage looks different: irregular holes with ragged edges, often concentrated around stained or soiled areas of a garment rather than spread across the entire surface. You might also notice small dark specks nearby, which are cockroach droppings.
If the damage appears on synthetic fabrics that moths wouldn’t touch, cockroaches (or crickets) are more likely culprits. Moths and carpet beetles strongly prefer animal-based fibers, while cockroaches will chew through virtually anything if it has an appealing residue on it.
The Contamination Problem
Beyond holes, cockroaches leave behind something worse: contamination. Their droppings carry organisms picked up from decaying food, garbage, and sewage. Their saliva is a major vehicle for spreading pathogens, and roaches regularly regurgitate partially digested food onto surfaces they contact. Any clothing a cockroach has crawled across or fed on may carry bacteria, staining, and a musty odor that’s hard to miss once an infestation is established.
There’s also an allergy concern. The saliva, droppings, and shed body parts of cockroaches are established triggers for asthma and allergic reactions. Wearing clothes that have been sitting in a roach-infested closet can bring those allergens into direct skin contact, which is especially problematic for children and people with respiratory conditions.
Which Clothes Are Most at Risk
Any garment you’ve worn and put back without washing is a target. Cockroaches are drawn to the combination of body oils, salt from sweat, and lingering food odors that accumulate on worn clothing. Items at highest risk include:
- Clothes with food or drink stains, even small ones you might not notice
- Sweaty gym clothes or work uniforms left in hampers or on the floor
- Starched or heavily treated fabrics, since starch is a food source
- Garments stored in dark, undisturbed spaces like the back of a closet or a storage box that isn’t sealed
Clean synthetic fabrics with no residue on them are the least appealing to cockroaches, but no fabric is completely safe if roaches are hungry enough and other food sources have dried up.
Keeping Roaches Out of Your Closet
The single most effective step is never putting worn clothes back in your closet. Clothing with food stains, sweat, body odor, or perfume acts like a dinner invitation. Wash all garments before returning them to storage, and spray the insides of shoes with a fabric refresher to cut down on odors that attract scavengers.
For seasonal clothes you’re putting away for months, skip cardboard boxes entirely. Cockroaches are attracted to paper-based products and can easily chew through cardboard. Use zippered canvas garment bags or clear plastic containers with tight-fitting lids instead. These create a physical barrier roaches can’t penetrate.
Closet hygiene matters more than most people realize. Vacuum floors and shelves regularly, paying special attention to corners, baseboards, and areas near walls where roaches travel. Wipe down higher surfaces like the tops of shelves and light fixtures with a damp cloth. This removes not just dust and debris but also the pheromone trails insects leave behind, which attract more of them to the same spots.
Check your closet for entry points. A crack in the drywall wide enough to slide a credit card through is wide enough for a cockroach. Seal gaps around windows, baseboards, and any plumbing penetrations in or near the closet. Empty backpacks and purses of food crumbs, wrappers, and gum before storing them, since a forgotten granola bar wrapper inside a bag is exactly the kind of food source that draws roaches into an otherwise clean space.
Natural Deterrents That Help
Sachets of dried lavender placed on closet shelves or hung from the rod can discourage cockroaches and other insects. If lavender isn’t your thing, dried peppermint, rosemary, thyme, or whole cloves offer similar repellent properties. These won’t eliminate an existing infestation, but they add a layer of protection in a closet that’s already clean and well-sealed. Replace sachets every few months as the essential oils fade.
Keeping the areas leading to your closet clean is just as important as the closet itself. Piles of dirty laundry on the bedroom floor, stacks of old magazines, or general clutter near the closet door give roaches shelter and staging areas. A cockroach that’s already nesting in a pile of clothes outside your closet will eventually find its way inside.