we use Brake cleaner all the time to wash stuff down at work. one guy I will call "Joe" went to rinse out a 1 gallon plastic pail with brake clean over the oil drain barrel. as Joe wiped the bucket with a brown paper towel it gave a static spark. I was sitting about 40 feet away and the fireball was about 3-4' accrossed right about head level. he's lucky he didn't get burn't on more then a few hairs on his arm and head. brake clean has a few hassards that people tend to forget.