Seriously, I wish something could be done about flyers like those. Not just the bag+rock ones, but all of them. I've got real estate agents (the worst for this kind of spam), landscapers, house cleaning, etc all tossing flyers at my house every day. They ultimately just blow away and litter the place.

It's such a small annoyance, but having to pick up the "trash" from these companies every day really grinds my gears.