Strong smelling mothballs will repel moths; however, herbs will do the same thing and smell better. Lavender, wormwood, cedar and patchouli along with a small amount of rosemary or cinnamon will work well. Mix any combination and place in the toe of a used stocking. Tie open end and hang in closet or place in a drawer.
Moths do not eat wool – they eat the food stains and perspiration left on clothes or blankets. Keep wool items clean and stored in sealed plastic bags or containers.
Source: Farmer's Almanac