We just built a run! But it doesn't have a gate up yet so I've got the end of the roll of wire grid tucked up to the existing fence and no matter what I do it curls up and leaves a gap at the bottom juuuuuust wide enough for the little easter eggers to slip out. The other three can't, they're too big. We will hopefully be building a gate this weekend which should solve that. Fingers crossed, anyway!