Spider invasion! Several species of spider have decided my house is the great hangout on my block (and NO, it's not because it's filled with other bugs). How do I keep them out? Better yet-- because I live in an old house with cracks and crevices everywhere--how do I repel them to begin with? And I DON'T want advice like, "New England Nuthatch sparrows are great at finding and eating spiders... you can mail-order a dozen Nuthatch eggs from Hammacher Schlemmer and let them breed and flourish inside your home."