We built our ramp out of a piece of left over wood we had in the garage and we covered it in rubber matting that we got at the home depot for $1.32. It gives the piggies great traction and we don't have to worry about them eating it like they do astroturf We used a staple gun to attach the rubber on the back side of the board. It was very cheap and took about 10 minutes. The pigs love it!