Cedar is a natural moth repellent and helps to absorb moisture. The oils that keep them fragrant is what repels the moths and insects. Ideal for Cashmere and Cashmere blends. Also serve as an air freshener for wardrobes and drawers. Natural protection from pests. Instructions about how to take care of Ekotree Cashmere go to: https://www.ekotreeknitwear.store/pages/care-instructions