Here is the follow up to my Kudzu post. This information is from the Sunday Greenville SC newspaper.
Greenville County Recreation District will be employing 30 goats as temps. They will be use to clear underbrush on about 15 acres to help preserve the historic Campbell’s Covered Bridge in the park. The terraine is too rocky or steep for human or machine clearing. In addition heavy equipment would send silt and mud into the Beaverdam Creek and damage or destroy part of the old homestead. Goats not only clear large areas of brush and weeds, including poison oak and poison ivy, they also fertilize and till. You need 10 goats per acre. They will clear it in a month.
Yes, there is a company that does this. It is called Wells Goat Farm. You have to check out http://wellsfarmgoats.com/gallery, where these photos are from. Pretty interesting ecological way to clear an area. Here are before and after photos of what the goats did in one month.