I like to think of it like raccoons digging around in someone's trash can. Sure there's a little effort involved and maybe the entire street gets a fine coating of everyone's week-old leftovers and napkins, but gosh darn it those delicious treasures were going to go to the landfill anyway!
Okay. I can see how this might get a little annoying but just let 'em have it. Or if not, try to seal it up by loading all the treasures down to start.
But whatever you do, don't go out of your way to feed the raccoons or you'll end up with this:
Unless you want that sorta thing. I wouldn't blame you if you did