DIY Wool Dryer Balls | Tutorial by Little Monkeys Crochet | Make your own wool dryer balls and save money, time AND energy! Dryer Balls take the place of dryer sheets to make your clothing soft and static-free. Just toss them in the dryer with your clean laundry and let them work their magic. Wool Dryer Balls last a year or more, so you don’t have to replace them all the time. And they reduce your drying time by up to 25%, saving on energy costs!