It might be hard to see on a bowling ball, but a 1:1:1 mix of Simple Green/water/alcohol leaves a film on glass. I had some odd spots on my windshield that wouldn't come off with glass cleaner, so I used my Simple Green mixture. It removed the spots easily, but left a nasty film afterwards. I'm cheap so I might continue to use it as a cleaner, but I will finish up with either straight alcohol or an actual bowling ball cleaner.