When you're driving down the road enjoying an apple, pear or nectarine, has the thought of tossing the core of the fruit into the woods crossed your mind? It's completely natural and biodegradable, so why not? The reality is that food is food, and when edible trash like an apple core is tossed out of the car window, it ends up not too far from the road. The smell of food attracts wild animals, who get dangerously close to the road. And even if an animal eats the core without harm, it learns that the sides of the road are potential places for food. No litter -- even the biodegradable kind -- is safe litter.