Wool Laundry Balls are revolutionary, but sometimes they need a little pick-me-up. This 2 oz. Sea Salt Aroma Blend Refill helps you put the joy back in your wool balls so they keep delivering load after load of your favorite aromas. This aroma blend refill can be used to keep your O.G. wool balls scent in play or to shake it up with a fresh new scent. Either way, it sure puts the “yay” back into laundry day.