You can, but it is a pain in the harris because the vinyl is naturally hydrophobic so it will not easily get into the grooves. A surfactant (wetting agent) allows the liquid to get into the grooves. IPA reduces the surface tension somewhat but you would need to add more and therein lies the problem. Kleen Green is available easily and some swear by it. Just a couple of drops in half a litre of IPA/Water works wonders and is better than sunlight etc.