Dolly Washer Balls 5 "They work ..." Margaret 04 February 2011 A set of Dolly Washer Balls has been rolling around my washing machine since September 2006, and I have no regrets. Yes, we have to keep track of the little blighters: in the first year, 2 disappeared and remain MIA to this day (I live in hope). I live in a very hard water area (Berkshire), and whilst I have not reduced detergent by big percentage, I wouldn't be without them. More things are clean first time. None have broken or perished. A note from the team Thanks for placing your review.