More Tips: Remember, washer balls are for the washing machine, and dryer balls are for the dryer. It’s important for me to mention this because I once saw a review where someone put wool dryer balls in the washing machine. Please don’t do this. Also, there are also plastic dryer balls which I do not recommend because heat plastic.⁣⁣While the clothes are in the washing maching, I add 2-3 drops of essential oil to 2-3 wool balls. Then, I let them sit in the dryer while the clothes wash, allowing t