I have found the best way to clean strings is to get a PVC tube, cap one end, put a screw cap on the other end and fill it with denatured alcohol. Take your strings off, put them in over night. They will be just like new. Way better than boiling. I have been rotating two sets of strings for my six string for a year now with great results. When putting on new strings, give yourself an extra wrap incase of breakage.