I forgot to add, alcohol doesn't hurt bowling balls. Most commercial cleaners use alcohol in their formula.
It's funny what people will claim though, several years back when I went to the BTM Super School, Andy Parker(USBC Certified Coach) told me that alcohol causes the cover stock to crystallize. Being a somewhat new bowler at the time, I didn't know any better. When I got home, I asked the main guy at Lane Masters about it and he replied "That guy is an idiot"