My dad spent a not-inconsiderable number of hours waging war against the local squirrel population over control of his bird feeders. He fought bravely, and resolutely, and ultimately he lost: After an incident involving an angry squirrel who got loose in the back of his truck, he decided the whole thing wasn't worth the hassle. Detente was achieved: The squirrels were permitted to go about their business more or less unmolested, and somehow life went on pretty much as it always had... Read more.