Their diet consists of materials containing keratin, a protein found in animal products. Therefore, they can feed on wool, feathers, fur, insect remains, paper, and even organic particles present in household dust. Their consumption is quite small, so they rarely cause harm.
Unlike other moths associated with clothing or food, the case-bearing moth is not considered a pest. Its presence does not imply a dangerous infestation nor does it represent a risk to human health. It generally appears in environments where dust, fibers, and organic debris accumulate, something common in any home.
For this reason, controlling it does not require the use of chemicals or drastic measures. Thorough and consistent cleaning is usually enough to reduce its presence.
