I used this cleaner with my former employer in Wisconsin. We were big fans of Great Stuff. We serviced heavy machinery and would get grease, dirt, oil, tar, etc on a daily basis. We were amazed at how little cleaner it took to get good coverage and leave our hands and arms looking like we did paperwork all day. Nothing else needed. Great Stuff and a little water and clean hands were assured, not even the dirt that gets in-bedded in the grooves of callouses. If you use a little brush you can get the dirt from your nail beds out. It is also nice that Great Stuff doesn't have any lingering smells. We typically didn't pull the "environment card, but it is nice that Great Stuff comes renewable sources. Well I left that employer and moved to a different region and I tried to find another Hand cleaner locally. People thought I had serious OCD because I made such a big deal about hand cleaner. I was out shopping and a cashier said,"My husband is a mechanic too his hands look like that too". The next day I ordered Great Stuff. You'll be pulling Great Stuff from my cold dead hands....But they'll be clean.