Besides, someone might slip
When Megan was about 4, I was driving and eating a banana, and when I was done I winged the banana peel out the car window into the woods. She chastised me for littering, and I (shame on me) replied, "No, that's not littering. The crows will eat it." About ten minutes later she, somewhat sheepishly, said, "Daddy, I don't think crows eat banana peels."