So this year I thought I'd document it visually. Here's Colorado Boulevard at about 3:30 p.m. January 1:
Twenty-four hours later: Spotless. Five and a half miles of Colorado cleaned up by elves (whose salary I help pay) magically and overnight. I'm so damn impressed at how welll they clean it up, that I don't even get mad at the mess.
Here's the "after" photo: