One of the most exciting realizations I found using the Pigtiller was how the pigs ate every blade of grass and root under the pen. Also how they consistently tilled corner to corner about 4 to 6 inches deep. Just enough soil for planting. And always deposited poo in the rear corner of the pen opposite where I gave them food. The no need for a tractor was a real bonus too. Feeding them all my leftovers and whatever I could find around town made it affordable since I had no feed bill. The biggest treat was the taste of pork from a pasture grown animal.