"Scammers" is a bad word, and I truly don't think of myself as a better person. But I do get a little nervous when approached.
"Wash your widows?", "Got some change?" And a really elaborate one last year "I'm out of gas and I just need a gallon or so to get back home what do you say?".
I don't think it's a complete coincidence that these are the two gas stations that I just around the corner from the rental car depots. I've been to a lot of places in the US and not had much of this sort of approach but this is where the tourists are, right?