I used to mow lawns in the hood when I worked for the city.
This dude that I was working with (who also lived there) tossed a McDonalds' bag out the window of our truck one time, so I gave him the
He looks at me and says, "Man, this the hood, even grandmas litter."
10-20% based on the service. If the service is horrible, however, you'll only catch me rounding up to the nearest dollar.
I have worked in the service industry, too, and I'll be the first to say that it is far from the back breaking work people in the industry make it out tobe.