I have sheep and lots (and mean LOTS) of raw fleece. I had a washed fleece and made dryer balls with it. I hang most of my clothes outside but when I use the dryer I always use the dryer balls. If I need fabric softener, I just put a little on the dryer ball and toss it in. But Since I have a strong reaction to fragrance, I don't use the fabric softener very much. It takes quite a bit of fleece to make a decent size ball once they are felted. About 3x as much as the size ball you want to end up with.