I bought a 2 pack of EVRIHOLDER PRODUCTS 100% Wool dryer balls from my local department store. Then I bought 3 more packs because I have a large capacity dryer. After testing 8 balls in a load of 3 synthetic blankets, that are notorious for static after drying, the blankets had NO static. There was no clinging together, no popping and snapping with static shock and my long hair was not attracted to the blankets as I pulled them out of the dryer. I bought these to reduce static and they did the job. Excellent!