Since Europeans landed on the America shores, aliens have taken over our gardens and our landscapes. Brought here by well-meaning plant lovers or as inadvertent hitchhikers, non-native plants, aka invasives, slither up tree trunks, create an impenetrable network of undergrowth and kill native species and they aren't even a good food source for native birds and mammals.

To great rid of these garden invaders takes a lot of equipment, people power and days of labor — unless you bring in the goats.  I visited The Izaak Walton League of America — who did just that — to find out what it's like having 30 goats roaming the "forests" of suburbia.