All my blankets and sheets decided to no longer be waterproof this winter. In the fall I cleaned them with the prescribed Nikwax wash and treated them with one of the Nikwax products. Fail. I washed them again and tried Schneider's waterpoofing. Fail. I laid them out and reapplied Nikwax. Fail. Schneider's. Fail. Any salvation for these otherwise perfect blankets and sheets? Outside of sending them to a "pro".