So I recently got my hands on some 99% pure isopropyl alcohol because people have been telling it's best to use when cleaning computers. I am looking to do some external cleaning of my laptop and was wondering exactly how to go about cleaning it. Do I just wet a cloth with the alcohol and start rubbing away or do I need to mix the alcohol with something else? Would it be ok to use Q-tips for the keys and a lint-free microfiber cloth for the screen? Thanks!