Never use alcohol to clean records. Alcohol damages vinyl, over time it will become brittle and you may see visible streaking on the surface. As far as not putting a liquid on the vinyl before you vacuum, that's just ignorance, any good detergent / surfactant breaks down any bonding between the dirt and the vinyl. For 90+% of records, the proper surfactant and relatively pure water will do an excellent job. As a Chemist, I can tell you that we used this 30 years ago to clean absurdly expensive analytical equipment that had vinyl measuring tubes.
