From bacteria to cockroaches to black mold, our houses can be home to some unappealing invaders. The market for pesticides, fungicides and antibacterial cleaning products is enormous.
But for Rob Dunn the household is a whole ecosystem, and many if not most of the non-human life in the house may actually be beneficial to human health. He wrote a book explaining it all, Never Home Alone: From Microbes to Millipedes, Camel Crickets and Honeybees: The Natural History of Where We Live.
Rob Dunn is an ecologist who says we should think twice before turning our households into sterile environments. He visits with details of his approach.