The pigs really do graze. As we clear out overgrown weeds we dump them, dirt, roots, leaves and all, straight into the pig pens. The pigs wag their tails and chow down.
At the same time they dig out the entire area in their pen. Currently working in the garden area, the two largest pigs are keeping it clear..this takes no time to accomplish and they are moved twice a day. The grass goes from knee high to bare dirt in about 6-7 hours.