There have been several threads on cleaning power cords. Acetone...bad choice, leaves power cords sticky. I have tried everything mentioned in addition to soaking in Mr. Clean and every other degreaser on the market. None of it works very well. Here's the solution "Marine Strip" A boat Captain told me about it. It is fantastic! It's Good for Power Cords, Fenders, Vinyl seats, rub rails, etc. I pour it on a damp towel and just wipe the dirt off! Very little elbow grease required. Cords that have not been cleaned for many years might require a second cleaning. I have no affiliation with this product except I sell it in my Hardware store in Florida and have been using it for several years. No BS, it really works.