I'm betting soap and water would be a reasonable starting point. Maybe you could try carb cleaner?Or Simple Green. Simple Green seems to clean everything up really well. WD-40 was originally developed to be a cleaner. I love using it to clean up adhesive residues or oily dirt.Kerosene works as a nice cleaner, too. Just a few ideas.
Sweat, magic pee
Nuke the entire site from orbit. It's the only way to be sure.
Or Simple Green. Simple Green seems to clean everything up really well.
A dry paper towel will work, seriously. That's it.