Since I received this box of 6 XL dryer balls, I have done countless loads of laundry with them. They are so simple to use. You simply add all of the dryer balls to your dryer along with your clothes right out of the wash, and go. That's it!
This is an image of the back of the box outlining the benefits of using Woolzies Dryer Balls:
Full disclosure: Woolzies provided me with one box of 6 XL dryer balls for review. The thoughts and opinions expressed are strictly my own.