I have a roll of "poultry fencing" which is green and plastic that I picked up for pennies at an estate sale. Worst case scenario, I use it for my tomatoes to lean against. On the run, I'm definitely doing the sides and aprons with hardware cloth. For the top, would this stuff be adequate? I know if nothing else it should work to keep out an owl or hawk. My question is, is it a waste to go to the expense of hardware cloth of you aren't going to use it all over? Would most terrestrial predators simply climb and tear through and go in the top?