Cleaner for strings from Kyser. Bright, clean strings make an amazing improvement in the sound of your instrument. Smooth, clear tone can make all the difference in your playing, whether it's a flat-picked mandolin or a five-string slapped bass. Kyser String Cleaning digs into the tiniest grooves in your strings to remove the oily residue that dulls your sound, and lubricates at the same time for less string buzz and faster riffs.