The Fender® Slick String Cleaner prolongs the life of your instruments strings. The simple and effective applicator is a snap to use. The treated applicator pad with our proprietary cleaning solution does all the work for you. Just rub it up and down your strings and wipe clean with the included wiping cloth GÇô SLICK! The Fender Slick cleaning solution is safe for any finish and/or fingerboard wood.