I have about an acre & a half fenced barn lot, divided into 3 separate lots. Last year I purchased 2 baby razorback piglets & put them in the smallest pen, which is about 60'x60'. Within 3 days they had the ground so rooted up, I got rid of them. I thought I may need the grass in that lot just in case I had to use it for one of my horses. They sure can tear up some dirt!