Originally Posted by Ted_D
rubbing alcohol has oil in it. DONT use it
Unless you're using the diluted stuff with perfume oils in it, it does not. Rubbing alcohol is widely used as a surface prep.
The test to see if you have cleaned it properly is to get a water bottle and spray the surface. If water still beads up, then you need to continue cleaning. If it just runs off, then you should be good to go.