DNA wrotenuclearcat wroteBtw, in some cases you need to avoid alcohol based contact cleaners, as it is conductive.
alcohol isn't conductive? i dip entire pcbs in 99% alcohol
99% alcohol hygroscopic.
And even alcohol get evaporated easily, water part in it happily mixes with dirt and other contaminants under SMD chips, especially QFN/BGA/etc, and might remain longer and cause troubles. Sure if you dry them in hot air properly (and carefully, not not overheat anything), it will be fine, but if not...
So on my opinion - it is very handy, but should be used with reasonable precautions related to this matters.
P.S. Usually in non-food-grade concentrated alcohol they should add special chemicals, so people wont drink it or dont use to manufacture alcoholic drinks. No idea if it is done in Lebanon. And these chemicals might not be good for electronics.