> When I worked at Burger King, we pressure washed the front sidewalk about once a year. It sure cleaned up the stains from spilled drinks, etc.

How did it do on sunbaked, compacted chewing gum?

I tried using it to remove rust from some really old steel wheels and it didn't do much, but it will make an old brick look like new. Old wood cleans up nice, too. It made my garge door look like it had just been painted. I go crazy with stuff like that.
Howard