The problem was in the kitchen cupboard above the oven or in pantry where we store plastic bags of bulk products.

Adult Indian meal moths live less than 2 weeks, are non feeding and chiefly fly at dusk in the early evening. During the day they prefer to rest in poorly lighted areas. If disturbed, they fly in an irregular zigzag pattern. These moths fly mostly at night and are attracted to lights and may appear in the living room near or in front of television sets. Occasionally, the larvae or "white worms with black heads" crawl up walls and suspend from the ceiling attached to a single silken thread. Other times, a few larvae may be found in a food package along with unsightly webbing, cast skins and frass (fecal pellets).

Damage is caused by the larvae spinning silken threads as they feed and crawl, thus webbing food particles together. Besides infesting all cereal food products and whole grains, larvae also feed on a wide variety of foods and feeds such as dried fruits, powdered milk, cornmeal, flour, raisins, prunes, nuts, chocolate, candies, health food and seeds, bird seed, dog and cat food, fish food, graham crackers, dried red peppers, pastas, etc.

The larvae are what do the damage-feeding on these different food items, forming an extensive web type of substance over the food items that they infest.