When the fragrance from your Ecoegg dryer eggs is finished don't throw it away - reuse and refill with a new pack of dryer egg fragrance sticks. Refills are packed with essential oils and great for people with sensitive skin fragrance sticks, only for use with Ecoegg dryer eggs with these refills, your Ecoegg dryer eggs will continue to leave your clothes smelling great without the need for fabric softener contains no harsh chemicals.