The only predators I have are at night, maybe a fox or raccoon and my chickens will be secured every night so I found a heavy plastic fencing that I am securing to 5' fence posts and putting chicken wire around the outside and bending out the bottom. This isnt the flimsy plastic stuff, it is very stiff. I know, I know....some will say its not enough but I seriously dont have the predators. If you do have them as a concern, it will cost more to be secure. Ive spent $25 on posts, some I already had, $12 on the 40" x 25' plastic fence and I think $18 for the chicken wire. I also put netting over the top. Im still in the process of putting it all up.