i have purchased and used the Dunlap formula 65 that has been mention on here. works great. i found something else that works great also and has many other uses.. Bees Wax antique furniture polish.. cleans about everything. No prints, no wax build up, works on glass also. has a pleasant smell.. the lady at the antique resale shop got my wife to buying it a few years ago. just wont fit in your guitar case. has a very pleasant smell to it. look it up !!