I agree that reduced surface tension is important. It should be the goal of ANY type of cleaning agent to penetrate below the surface IF the design of that product is meant to do "deep cleaning" rather than just be a "surface rinse". After all, if you can't penetrate the surface, you can't clean anything below the surface, right???
You need something other than alcohol or water to really do a good job of this on vinyl, which requires the use of some type of emulsifier or surfactant. I am not a chemist though, so i don't know what the specifics of the situation really are. Then again, i would bet that a lot of these people marketing various "cleaning formula's" aren't "chemists" either, but that won't stop them from trying to make money. Sean
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