Put them in the dryer and let them do their job each time you run it. Been using them for a month now. They work really well. Enjoy!
I am always looking for things that work more naturally, more green, than the toxins we find in practically everything, even dryer sheets or those long chemical names is liquid fabric softener. I heard about the use of felted wool dry balls several times, and now is the time to try them out. I found directions on how to make them on eHow, http://www.ehow.com/how_5151381_make-wool-dryer-balls.html. Felting is a process of using hot water and hot drying to get the scales in the wool to shrink and bind together to become a solid unit. So I bought some felting wool and made 6 balls out of 2 skeins. They turned out well. The balls live in the dryer and really do keep the static electricity down and they also cut down drying time (thus saving electricity) and their bouncing around while the dryer is doing it's job, makes the clothes softer and fluffier. So here is How to Make Felted Wool Dryer Balls.