Over the past 10 years I have worked in a garage, machine shop and most recently an automotive research lab. I have never found a better hand cleaner than Worx.
It is a dry powder type of soap, not a sandy paste. Worx is incredible. It gets the hard-to-clean dirt and great from under and around fingernails. It even cleans in fingerprint ridges with little or no scrubbing. It cleans oily grease and dry dirt/grit equally well. It removes the smell of gasoline, cutting oil and ethylene glycol from skin. It is not harsh on skin. Unlike Gojo you never need to wash your hands twice. Usually the towel I use to dry up even has enough leftover residue to tackle the dirt that gets on my forearms up to my elbows.
I keep a small pouch in my glove box and bicycle bag for dry/semi-dry clean-up after chain or tire repairs.
The manufacturer says the product is organic, biodegradable and all natural. It smells fine, better than many hand cleaners at local part stores. It is not widely distributed in the U.S. but Grainger has it in many locations, and even some Wal-Mart stores. I brought some back to my lab from Canada and my co-workers line up to use it.