Here are some useful tips from around the web to help avoid damaging.
Keep your woolens clean. Clothes moths are attracted to organic materials, such as body oils, perspiration and saliva, that commonly accumulate on woolens. Dry cleaning or laundering will kill the eggs and larvae.
Don't let stored items go undisturbed for a whole season. Unfold your blankets and sweaters from time to time. Shake them out. Hang your blankets, sweaters and feather pillows outside in the hot sun a couple of times during the summer. Hot, direct sunlight will drive away moths and kill eggs and larvae.
Store clean items- this sounds so basic but many people put clothing away without it being cleaned or even washed. Organic materials in fabrics, such as spilled food, dirt, or even sweat, attracts pest but it also give mould a place to grow. Always clean your garments before putting then into storage.
Seal in plastic storage bags. Plastic bags will keep the moths and mould out unless there is larvae or mould spores sealed in with the clothing.
Dry cleaning or thoroughly laundering items in hot water (temperature above 120°F for 20 to 30 minutes) kills all stages of insects. This is the most common and effective method for controlling clothes moths in clothing, blankets, and other washable articles. (Because many woolen garments should not be washed in hot water, dry cleaning may be the only suitable cleaning option.) Keeping fabrics clean also has another advantage: insects are less likely to feed on clean fabrics than on heavily soiled ones.