I read on a different post from about a year back that while plastic poultry netting may not be effective in keep predators out it will at least keep the chickens in. I bought rolls of plastic poultry netting from Lowes last week and finished installing it 3 days ago, creating a 100 ft. run. Yesterday I watched as 2 of my 7 birds chewed on and created a hole in the netting. I tried scooting them away but when I came back a short time later the hole was larger. I thought I was watching a scene from "The Great Escape." So now, I am going to have to purchase some wire material. What I probably will do is purchase a 1-2 ft. width and just use it at the bottom to reinforce the netting. Mainly I wanted all to know that yes, these crazy birds will chew through plastic netting.