My wife litters like it's nothing. We have two young girls, ages 5 and 7. When my wife takes them to In N Out Burger, they eat in the car, and all of the trash ends up going out the window of the car. If we're walking downtown and stop to get snacks to eat along the way, my wife just drops the wrappers, cups, tissues, etc. as we walk. Our kids have now also learned to do this. When my wife smokes, she of course just tosses the cigarette butt anywhere, but also the pack, when it's empty, as well as the lighter, when it's no longer working. The thing is, I just don't say anything to her about it and just let her and the kids do it. I guess I just don't care enough to get into an argument.