I've been using the Mystic washer and dryer balls for a few months now and LOVE them! Our cloths are literally whiter (don't ask me how) and it definately takes about 20 minutes less to dry them. There is also almost no lint which I would think is a good thing since that is fibers coming off of clothing/towels. I keep trying to find out about the PVC thing but don't seem to be getting anywhere. Do you know if the mystic balls have it? At this point, I'm so chemical free in our life I'm not sure I'd worry about it, but I'd still like to know. At least to make an informed decision. KWIM?