Moths end up in your house because they find something to eat or a place to lay eggs, and the two most common indoor species are drawn to very different things. Pantry moths go after stored food. Clothes moths go after animal-based fibers. Understanding which type you’re dealing with tells you exactly where to look and what to fix.
Pantry Moths and Stored Food
The most common indoor moth, the Indianmeal moth, is attracted to dry goods in your kitchen and pantry. Their target list is long: cereal, grains, beans, nuts, flour, dried fruit, birdseed, dry pet food, spices, chocolate, candies, tea, and even dried flowers. If it’s a dry, shelf-stable food product, it’s fair game.
What surprises most people is that pantry moths often arrive inside the food itself. Eggs or larvae can already be present in a bag of flour or rice when you bring it home from the store. The larvae are also capable of chewing through plastic bags and thin cardboard, so even unopened packages can become infested if a nearby item is already harboring them. A single contaminated bag of birdseed or bulk-bin grain is enough to kick off a full kitchen infestation.
Pantry moths fly in a relatively direct, steady pattern and are attracted to light. You’ll often notice them fluttering near kitchen lights or windows in the evening. They’re about half an inch long at rest, with a wingspan that makes them noticeably larger than clothes moths. If you’re seeing moths near your kitchen or pantry rather than your closets, food is almost certainly the draw.
Clothes Moths and Animal Fibers
Clothes moths are attracted to something most people don’t think of as food: keratin, a protein found in animal-derived fibers. Wool, fur, silk, feathers, felt, and leather all contain keratin, and clothes moth larvae can digest it. Pure cotton and synthetic fabrics like polyester are rarely attacked unless they’re blended with wool or heavily soiled.
The “soiled” part matters more than you might expect. Perspiration, body oils, food stains, and urine on fabric all make it significantly more attractive to clothes moths. The organic residue gives larvae extra nutrition and helps them locate fibers worth eating. Clothes that have been worn but not washed before storage are a prime target. Cleaning items before putting them away removes the perspiration odors that draw these pests in.
Unlike pantry moths, clothes moths avoid light. They flutter weakly around the immediate area of the infestation rather than flying across the house, and they prefer undisturbed, dark spaces: the back of a closet, a storage trunk, the underside of upholstered furniture, or carpeted areas beneath heavy pieces that rarely get vacuumed. Damage typically appears in hidden locations like beneath collars, inside cuffs, or in crevices of upholstery. At rest, clothes moths are only about a quarter inch long, roughly half the size of pantry moths, and are gold or brownish in color with small tufts of hair on their heads.
Light, Warmth, and Humidity
Beyond specific food sources, general environmental conditions inside your home play a role. Moths of all species are more active and reproduce faster in warm, humid environments. Heated homes with poor ventilation in closets, attics, or pantry areas create ideal breeding conditions year-round, which is why indoor moth problems persist even in winter when outdoor moths are dormant.
Outdoor moths that aren’t pantry or clothes species can also end up indoors, drawn by artificial light through open windows, gaps around doors, or cracks in screens. Porch lights left on near entryways are a common pathway. These moths aren’t breeding inside your home or eating your belongings, but they can be a nuisance. If the moths you’re seeing are large, colorful, or clustered near windows and light fixtures rather than in your pantry or closets, they’re likely outdoor species that wandered in.
How to Tell Which Moth You Have
The location of the moths is your best clue. Moths near the kitchen, pantry, or pet food storage are almost certainly pantry moths. Moths near closets, wool rugs, or upholstered furniture point to clothes moths. Size helps too: pantry moths are roughly twice the length of clothes moths when at rest.
For clothes moths specifically, look for silken webbing on fabrics. Webbing clothes moths, the most common fabric-feeding species, leave behind temporary silk tubes and patches of webbing mixed with tiny particles of fabric and excrement. The excrement can actually take on the color of whatever fabric the larvae have been eating. Casemaking clothes moths, a less common relative, carry a small silken case with them as they feed, which also takes on the color of the fabric. Either type of webbing on stored clothing or rugs is a clear sign.
Pantry moth signs are different: look for fine webbing or small caterpillars inside food packages, especially in the corners and folds of bags. Clumping in dry goods like flour or cereal that shouldn’t be clumpy is another giveaway.
Removing What Attracts Them
For pantry moths, the fix starts with finding and discarding the infested food source. Check every dry good in your pantry, including items that seem sealed. Once you’ve cleared out contaminated packages, store replacements in hard, airtight containers (glass or thick plastic) rather than bags or cardboard boxes. Larvae can chew through thin packaging, so the container itself matters.
For clothes moths, thorough cleaning is the most effective step. Wash or dry-clean wool, silk, and fur items before storing them, since removing body oils and perspiration eliminates the scent signals that attract egg-laying females. Vacuum closets, carpet edges, and the undersides of upholstered furniture regularly, paying special attention to undisturbed areas where larvae thrive.
Pheromone traps can help reduce clothes moth populations by luring adult males onto a sticky surface using synthetic versions of female moth hormones. With fewer males available to mate, the breeding cycle slows. These traps typically stay active for about three months. They work best as a monitoring and population-reduction tool rather than a standalone solution, and they should be used alongside cleaning and proper storage for real results.
One practical note: if you’re using both pheromone traps and natural repellents like cedar or lavender sachets, keep them in separate areas. Cedar and lavender repel moths, while pheromone traps attract them. Placing them near each other cancels out the effectiveness of both. Use repellents inside storage containers and closets where you want to keep moths away, and place traps in open areas where you want to catch and monitor them.