The agency attributes many of the blazes to carelessness, like people tossing cigarette butts on the ground.
Seattle Times(Nov 15, 2016)
This is someone who, while taking in the natural beauty, also litters her cigarette butt on the ground.
Time(Nov 02, 2016)
Authorities suspect simple carelessness — like tossing cigarette butts on dry ground — caused some of the blazes, while others could be arson.
Seattle Times(Oct 27, 2016)