I much prefer the smaller square Baby Cube for raising cats. When I had them in this cage, so many of them just stopped at the zipper to form their chrysalides. I must have lazy cats. But, I’m starting a lot of milkweed by seed and I had butterflies laying eggs on my tiny seedlings. I discovered this is the perfect greenhouse when laid on its side. Keeps the butterflies away and it seems to keep the aphids at bay, too. It’s worked out perfectly!