I wear a lot of black and I have cats. If that doesn't give you an idea of the fuzz issues I face already, I don't know what will. I had white dryer balls, but I kept getting more fuzz on my clothes. So, I decided to buy black ones that are actual wool and I am never going back. No more little white fuzzies all over my clothes! Also, they're better for the environment and they help my clothes dry faster. What's not to like?