Pea, keep your door closed and don't put out anything for them. Ferrero Rochers are just the beginning, just wait till they get a taste of your latte or other such Starbucks delicatable. Cute as they are they are alot of trouble, and they carry the rabbies virus so be careful. I might put out water for wild animals in the dead of winter, but no food.
Let mother nature do her thing, you'll be a whole lot safer.