Scientists have found a way to prevent animals from destroying vegetation without killing it or building expensive fences. A new study from the University of Sydney focused on a wallaby (a kind of small kangaroo) that gnaws eucalyptus saplings in Australia.
But the idea could apply to deer, elephants, or any vegetarian animal guided primarily by the sense of smell. The deceptive artificial scent works just as effectively as planting real, inedible Boronia bushes around the trees - but more efficient from an agricultural point of view.