We just got a 10x30 dog run for our 10 hens, 1 roo. Of course after reading up on here everyone says to cover at least the bottom 2ft with HC which I want to do but my husband is not a fan of the idea. Now I've read that raccoons are the ones that could grab in and then of course snakes.. but we have been our house almost 7 years and I've never seen anything more than a worm snake and opossums. Our biggest threats are hawks and stray dogs, which we are covering it so those 2 shouldn't be an issue. If we lock them up in the coop at night when raccoons come out do you think we will be fine not doing the HC? He also brought up these plastic pieces that go in between the fencing, would those work well enough?