I use the highest % isoprophyl alcohol I can find. You should be able to get it at the supermarket. It is cheap. Right now I have 91%. Just make sure you're careful with the stuff and don't get it on printed labels, as it can loosen up the ink. It's also fairly good to get rid of permanent ink markings on plastic too and markings on labels, but it can screw up the ink on the original label or if it doesn't do that, it can mess up the glaze on the label too.
> What soloution would be best for the edge connectors of carts? Any ideas.....
> I'm from australia so there's no WalMart here unfortunately... ;-)