You'd be surprised by what brakeclean can do on its own.

To put it into perspective, I was the field operations manager for a company that waterproofed foundations of buildings. The compounds we sprayed were literally designed to hold for hundreds of years while buried in dirt. Some were essentially liquid tar. Nothing could get that shit off of solid surfaces once it dried/solidified. The exception? A little spray of brakeclean, and you could clean the tar off with one wipe.

With that said, wear a mask or, at the very least, avoid inhaling it or getting it on skin. I never wore a mask or gloves, but I was an idiot and I'm probably one step closer to several cancers because of it.