Using wool dryer balls is a great way to add fresh, natural fragrance to your clothes, linens, and towels with essential oils. Although you could theoretically use any essential oil, we recommend avoiding “hot” oils such as Cinnamon Bark and Clove Bud, which may cause irritation, as well as oils like Blue Tansy which may cause staining. Our favorite essential oils to use with laundry dryer balls include Lavandin, Meadow Breeze blend, and Falling Rain blend.